Move pci_enable_acs() and the functions it depends on, further up in the
source code to avoid having to forward declare it when we make it static
in near future (next patch).
No functional changes intended.
Signed-off-by: Rajat Jain <[email protected]>
---
v4: Same as v3
v3: Initial version of the patch, created per Bjorn's suggestion
drivers/pci/pci.c | 254 +++++++++++++++++++++++-----------------------
1 file changed, 127 insertions(+), 127 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ce096272f52b1..eec625f0e594e 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -777,6 +777,133 @@ int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask)
return 0;
}
+static int pci_acs_enable;
+
+/**
+ * pci_request_acs - ask for ACS to be enabled if supported
+ */
+void pci_request_acs(void)
+{
+ pci_acs_enable = 1;
+}
+
+static const char *disable_acs_redir_param;
+
+/**
+ * pci_disable_acs_redir - disable ACS redirect capabilities
+ * @dev: the PCI device
+ *
+ * For only devices specified in the disable_acs_redir parameter.
+ */
+static void pci_disable_acs_redir(struct pci_dev *dev)
+{
+ int ret = 0;
+ const char *p;
+ int pos;
+ u16 ctrl;
+
+ if (!disable_acs_redir_param)
+ return;
+
+ p = disable_acs_redir_param;
+ while (*p) {
+ ret = pci_dev_str_match(dev, p, &p);
+ if (ret < 0) {
+ pr_info_once("PCI: Can't parse disable_acs_redir parameter: %s\n",
+ disable_acs_redir_param);
+
+ break;
+ } else if (ret == 1) {
+ /* Found a match */
+ break;
+ }
+
+ if (*p != ';' && *p != ',') {
+ /* End of param or invalid format */
+ break;
+ }
+ p++;
+ }
+
+ if (ret != 1)
+ return;
+
+ if (!pci_dev_specific_disable_acs_redir(dev))
+ return;
+
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ if (!pos) {
+ pci_warn(dev, "cannot disable ACS redirect for this hardware as it does not have ACS capabilities\n");
+ return;
+ }
+
+ pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
+
+ /* P2P Request & Completion Redirect */
+ ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
+
+ pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
+
+ pci_info(dev, "disabled ACS redirect\n");
+}
+
+/**
+ * pci_std_enable_acs - enable ACS on devices using standard ACS capabilities
+ * @dev: the PCI device
+ */
+static void pci_std_enable_acs(struct pci_dev *dev)
+{
+ int pos;
+ u16 cap;
+ u16 ctrl;
+
+ pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ if (!pos)
+ return;
+
+ pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);
+ pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
+
+ /* Source Validation */
+ ctrl |= (cap & PCI_ACS_SV);
+
+ /* P2P Request Redirect */
+ ctrl |= (cap & PCI_ACS_RR);
+
+ /* P2P Completion Redirect */
+ ctrl |= (cap & PCI_ACS_CR);
+
+ /* Upstream Forwarding */
+ ctrl |= (cap & PCI_ACS_UF);
+
+ pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
+}
+
+/**
+ * pci_enable_acs - enable ACS if hardware support it
+ * @dev: the PCI device
+ */
+void pci_enable_acs(struct pci_dev *dev)
+{
+ if (!pci_acs_enable)
+ goto disable_acs_redir;
+
+ if (!pci_dev_specific_enable_acs(dev))
+ goto disable_acs_redir;
+
+ pci_std_enable_acs(dev);
+
+disable_acs_redir:
+ /*
+ * Note: pci_disable_acs_redir() must be called even if ACS was not
+ * enabled by the kernel because it may have been enabled by
+ * platform firmware. So if we are told to disable it, we should
+ * always disable it after setting the kernel's default
+ * preferences.
+ */
+ pci_disable_acs_redir(dev);
+}
+
/**
* pci_restore_bars - restore a device's BAR values (e.g. after wake-up)
* @dev: PCI device to have its BARs restored
@@ -3230,133 +3357,6 @@ void pci_configure_ari(struct pci_dev *dev)
}
}
-static int pci_acs_enable;
-
-/**
- * pci_request_acs - ask for ACS to be enabled if supported
- */
-void pci_request_acs(void)
-{
- pci_acs_enable = 1;
-}
-
-static const char *disable_acs_redir_param;
-
-/**
- * pci_disable_acs_redir - disable ACS redirect capabilities
- * @dev: the PCI device
- *
- * For only devices specified in the disable_acs_redir parameter.
- */
-static void pci_disable_acs_redir(struct pci_dev *dev)
-{
- int ret = 0;
- const char *p;
- int pos;
- u16 ctrl;
-
- if (!disable_acs_redir_param)
- return;
-
- p = disable_acs_redir_param;
- while (*p) {
- ret = pci_dev_str_match(dev, p, &p);
- if (ret < 0) {
- pr_info_once("PCI: Can't parse disable_acs_redir parameter: %s\n",
- disable_acs_redir_param);
-
- break;
- } else if (ret == 1) {
- /* Found a match */
- break;
- }
-
- if (*p != ';' && *p != ',') {
- /* End of param or invalid format */
- break;
- }
- p++;
- }
-
- if (ret != 1)
- return;
-
- if (!pci_dev_specific_disable_acs_redir(dev))
- return;
-
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
- if (!pos) {
- pci_warn(dev, "cannot disable ACS redirect for this hardware as it does not have ACS capabilities\n");
- return;
- }
-
- pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
-
- /* P2P Request & Completion Redirect */
- ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
-
- pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
-
- pci_info(dev, "disabled ACS redirect\n");
-}
-
-/**
- * pci_std_enable_acs - enable ACS on devices using standard ACS capabilities
- * @dev: the PCI device
- */
-static void pci_std_enable_acs(struct pci_dev *dev)
-{
- int pos;
- u16 cap;
- u16 ctrl;
-
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
- if (!pos)
- return;
-
- pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);
- pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
-
- /* Source Validation */
- ctrl |= (cap & PCI_ACS_SV);
-
- /* P2P Request Redirect */
- ctrl |= (cap & PCI_ACS_RR);
-
- /* P2P Completion Redirect */
- ctrl |= (cap & PCI_ACS_CR);
-
- /* Upstream Forwarding */
- ctrl |= (cap & PCI_ACS_UF);
-
- pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
-}
-
-/**
- * pci_enable_acs - enable ACS if hardware support it
- * @dev: the PCI device
- */
-void pci_enable_acs(struct pci_dev *dev)
-{
- if (!pci_acs_enable)
- goto disable_acs_redir;
-
- if (!pci_dev_specific_enable_acs(dev))
- goto disable_acs_redir;
-
- pci_std_enable_acs(dev);
-
-disable_acs_redir:
- /*
- * Note: pci_disable_acs_redir() must be called even if ACS was not
- * enabled by the kernel because it may have been enabled by
- * platform firmware. So if we are told to disable it, we should
- * always disable it after setting the kernel's default
- * preferences.
- */
- pci_disable_acs_redir(dev);
-}
-
static bool pci_acs_flags_enabled(struct pci_dev *pdev, u16 acs_flags)
{
int pos;
--
2.27.0.212.ge8ba1cc988-goog
Currently ACS capabiity is being looked up at a number of places. Read and
store it once at bootup so that it can be used by all later.
Signed-off-by: Rajat Jain <[email protected]>
---
v4: No change
v3: fix commit log, remove forward declation of static function
v2: Commit log cosmetic changes
drivers/pci/p2pdma.c | 2 +-
drivers/pci/pci.c | 20 ++++++++++++++++----
drivers/pci/pci.h | 2 +-
drivers/pci/probe.c | 2 +-
drivers/pci/quirks.c | 8 ++++----
include/linux/pci.h | 1 +
6 files changed, 24 insertions(+), 11 deletions(-)
diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
index e8e444eeb1cd2..f29a48f8fa594 100644
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -253,7 +253,7 @@ static int pci_bridge_has_acs_redir(struct pci_dev *pdev)
int pos;
u16 ctrl;
- pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ACS);
+ pos = pdev->acs_cap;
if (!pos)
return 0;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index eec625f0e594e..73a8627822140 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -831,7 +831,7 @@ static void pci_disable_acs_redir(struct pci_dev *dev)
if (!pci_dev_specific_disable_acs_redir(dev))
return;
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ pos = dev->acs_cap;
if (!pos) {
pci_warn(dev, "cannot disable ACS redirect for this hardware as it does not have ACS capabilities\n");
return;
@@ -857,7 +857,7 @@ static void pci_std_enable_acs(struct pci_dev *dev)
u16 cap;
u16 ctrl;
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ pos = dev->acs_cap;
if (!pos)
return;
@@ -883,7 +883,7 @@ static void pci_std_enable_acs(struct pci_dev *dev)
* pci_enable_acs - enable ACS if hardware support it
* @dev: the PCI device
*/
-void pci_enable_acs(struct pci_dev *dev)
+static void pci_enable_acs(struct pci_dev *dev)
{
if (!pci_acs_enable)
goto disable_acs_redir;
@@ -3362,7 +3362,7 @@ static bool pci_acs_flags_enabled(struct pci_dev *pdev, u16 acs_flags)
int pos;
u16 cap, ctrl;
- pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ACS);
+ pos = pdev->acs_cap;
if (!pos)
return false;
@@ -3487,6 +3487,18 @@ bool pci_acs_path_enabled(struct pci_dev *start,
return true;
}
+/**
+ * pci_acs_init - Initialize ACS if hardware supports it
+ * @dev: the PCI device
+ */
+void pci_acs_init(struct pci_dev *dev)
+{
+ dev->acs_cap = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+
+ if (dev->acs_cap)
+ pci_enable_acs(dev);
+}
+
/**
* pci_rebar_find_pos - find position of resize ctrl reg for BAR
* @pdev: PCI device
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 6d3f758671064..12fb79fbe29d3 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -532,7 +532,7 @@ static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
return resource_alignment(res);
}
-void pci_enable_acs(struct pci_dev *dev);
+void pci_acs_init(struct pci_dev *dev);
#ifdef CONFIG_PCI_QUIRKS
int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
int pci_dev_specific_enable_acs(struct pci_dev *dev);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2f66988cea257..6d87066a5ecc5 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2390,7 +2390,7 @@ static void pci_init_capabilities(struct pci_dev *dev)
pci_ats_init(dev); /* Address Translation Services */
pci_pri_init(dev); /* Page Request Interface */
pci_pasid_init(dev); /* Process Address Space ID */
- pci_enable_acs(dev); /* Enable ACS P2P upstream forwarding */
+ pci_acs_init(dev); /* Access Control Services */
pci_ptm_init(dev); /* Precision Time Measurement */
pci_aer_init(dev); /* Advanced Error Reporting */
pci_dpc_init(dev); /* Downstream Port Containment */
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 812bfc32ecb82..b341628e47527 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4653,7 +4653,7 @@ static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags)
if (!pci_quirk_intel_spt_pch_acs_match(dev))
return -ENOTTY;
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ pos = dev->acs_cap;
if (!pos)
return -ENOTTY;
@@ -4961,7 +4961,7 @@ static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev)
if (!pci_quirk_intel_spt_pch_acs_match(dev))
return -ENOTTY;
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ pos = dev->acs_cap;
if (!pos)
return -ENOTTY;
@@ -4988,7 +4988,7 @@ static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev)
if (!pci_quirk_intel_spt_pch_acs_match(dev))
return -ENOTTY;
- pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
+ pos = dev->acs_cap;
if (!pos)
return -ENOTTY;
@@ -5355,7 +5355,7 @@ int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout)
bool found;
struct pci_dev *bridge = bus->self;
- pos = pci_find_ext_capability(bridge, PCI_EXT_CAP_ID_ACS);
+ pos = bridge->acs_cap;
/* Disable ACS SV before initial config reads */
if (pos) {
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 34c1c4f45288f..0ca39042507ce 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -486,6 +486,7 @@ struct pci_dev {
#ifdef CONFIG_PCI_P2PDMA
struct pci_p2pdma *p2pdma;
#endif
+ u16 acs_cap; /* ACS Capability offset */
phys_addr_t rom; /* Physical address if not from BAR */
size_t romlen; /* Length if not from BAR */
char *driver_override; /* Driver name to force a match */
--
2.27.0.212.ge8ba1cc988-goog
On Tue, Jul 07, 2020 at 03:46:01PM -0700, Rajat Jain wrote:
> Move pci_enable_acs() and the functions it depends on, further up in the
> source code to avoid having to forward declare it when we make it static
> in near future (next patch).
>
> No functional changes intended.
>
> Signed-off-by: Rajat Jain <[email protected]>
Applied patches 1-3 to pci/enumeration for v5.9, thanks!
I held off on patch 4 (enabling PCI_ACS_TB) until we have a little
more conversation on the impact of it.
> ---
> v4: Same as v3
> v3: Initial version of the patch, created per Bjorn's suggestion
>
> drivers/pci/pci.c | 254 +++++++++++++++++++++++-----------------------
> 1 file changed, 127 insertions(+), 127 deletions(-)
>
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index ce096272f52b1..eec625f0e594e 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -777,6 +777,133 @@ int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask)
> return 0;
> }
>
> +static int pci_acs_enable;
> +
> +/**
> + * pci_request_acs - ask for ACS to be enabled if supported
> + */
> +void pci_request_acs(void)
> +{
> + pci_acs_enable = 1;
> +}
> +
> +static const char *disable_acs_redir_param;
> +
> +/**
> + * pci_disable_acs_redir - disable ACS redirect capabilities
> + * @dev: the PCI device
> + *
> + * For only devices specified in the disable_acs_redir parameter.
> + */
> +static void pci_disable_acs_redir(struct pci_dev *dev)
> +{
> + int ret = 0;
> + const char *p;
> + int pos;
> + u16 ctrl;
> +
> + if (!disable_acs_redir_param)
> + return;
> +
> + p = disable_acs_redir_param;
> + while (*p) {
> + ret = pci_dev_str_match(dev, p, &p);
> + if (ret < 0) {
> + pr_info_once("PCI: Can't parse disable_acs_redir parameter: %s\n",
> + disable_acs_redir_param);
> +
> + break;
> + } else if (ret == 1) {
> + /* Found a match */
> + break;
> + }
> +
> + if (*p != ';' && *p != ',') {
> + /* End of param or invalid format */
> + break;
> + }
> + p++;
> + }
> +
> + if (ret != 1)
> + return;
> +
> + if (!pci_dev_specific_disable_acs_redir(dev))
> + return;
> +
> + pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
> + if (!pos) {
> + pci_warn(dev, "cannot disable ACS redirect for this hardware as it does not have ACS capabilities\n");
> + return;
> + }
> +
> + pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
> +
> + /* P2P Request & Completion Redirect */
> + ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
> +
> + pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
> +
> + pci_info(dev, "disabled ACS redirect\n");
> +}
> +
> +/**
> + * pci_std_enable_acs - enable ACS on devices using standard ACS capabilities
> + * @dev: the PCI device
> + */
> +static void pci_std_enable_acs(struct pci_dev *dev)
> +{
> + int pos;
> + u16 cap;
> + u16 ctrl;
> +
> + pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
> + if (!pos)
> + return;
> +
> + pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);
> + pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
> +
> + /* Source Validation */
> + ctrl |= (cap & PCI_ACS_SV);
> +
> + /* P2P Request Redirect */
> + ctrl |= (cap & PCI_ACS_RR);
> +
> + /* P2P Completion Redirect */
> + ctrl |= (cap & PCI_ACS_CR);
> +
> + /* Upstream Forwarding */
> + ctrl |= (cap & PCI_ACS_UF);
> +
> + pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
> +}
> +
> +/**
> + * pci_enable_acs - enable ACS if hardware support it
> + * @dev: the PCI device
> + */
> +void pci_enable_acs(struct pci_dev *dev)
> +{
> + if (!pci_acs_enable)
> + goto disable_acs_redir;
> +
> + if (!pci_dev_specific_enable_acs(dev))
> + goto disable_acs_redir;
> +
> + pci_std_enable_acs(dev);
> +
> +disable_acs_redir:
> + /*
> + * Note: pci_disable_acs_redir() must be called even if ACS was not
> + * enabled by the kernel because it may have been enabled by
> + * platform firmware. So if we are told to disable it, we should
> + * always disable it after setting the kernel's default
> + * preferences.
> + */
> + pci_disable_acs_redir(dev);
> +}
> +
> /**
> * pci_restore_bars - restore a device's BAR values (e.g. after wake-up)
> * @dev: PCI device to have its BARs restored
> @@ -3230,133 +3357,6 @@ void pci_configure_ari(struct pci_dev *dev)
> }
> }
>
> -static int pci_acs_enable;
> -
> -/**
> - * pci_request_acs - ask for ACS to be enabled if supported
> - */
> -void pci_request_acs(void)
> -{
> - pci_acs_enable = 1;
> -}
> -
> -static const char *disable_acs_redir_param;
> -
> -/**
> - * pci_disable_acs_redir - disable ACS redirect capabilities
> - * @dev: the PCI device
> - *
> - * For only devices specified in the disable_acs_redir parameter.
> - */
> -static void pci_disable_acs_redir(struct pci_dev *dev)
> -{
> - int ret = 0;
> - const char *p;
> - int pos;
> - u16 ctrl;
> -
> - if (!disable_acs_redir_param)
> - return;
> -
> - p = disable_acs_redir_param;
> - while (*p) {
> - ret = pci_dev_str_match(dev, p, &p);
> - if (ret < 0) {
> - pr_info_once("PCI: Can't parse disable_acs_redir parameter: %s\n",
> - disable_acs_redir_param);
> -
> - break;
> - } else if (ret == 1) {
> - /* Found a match */
> - break;
> - }
> -
> - if (*p != ';' && *p != ',') {
> - /* End of param or invalid format */
> - break;
> - }
> - p++;
> - }
> -
> - if (ret != 1)
> - return;
> -
> - if (!pci_dev_specific_disable_acs_redir(dev))
> - return;
> -
> - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
> - if (!pos) {
> - pci_warn(dev, "cannot disable ACS redirect for this hardware as it does not have ACS capabilities\n");
> - return;
> - }
> -
> - pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
> -
> - /* P2P Request & Completion Redirect */
> - ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC);
> -
> - pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
> -
> - pci_info(dev, "disabled ACS redirect\n");
> -}
> -
> -/**
> - * pci_std_enable_acs - enable ACS on devices using standard ACS capabilities
> - * @dev: the PCI device
> - */
> -static void pci_std_enable_acs(struct pci_dev *dev)
> -{
> - int pos;
> - u16 cap;
> - u16 ctrl;
> -
> - pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ACS);
> - if (!pos)
> - return;
> -
> - pci_read_config_word(dev, pos + PCI_ACS_CAP, &cap);
> - pci_read_config_word(dev, pos + PCI_ACS_CTRL, &ctrl);
> -
> - /* Source Validation */
> - ctrl |= (cap & PCI_ACS_SV);
> -
> - /* P2P Request Redirect */
> - ctrl |= (cap & PCI_ACS_RR);
> -
> - /* P2P Completion Redirect */
> - ctrl |= (cap & PCI_ACS_CR);
> -
> - /* Upstream Forwarding */
> - ctrl |= (cap & PCI_ACS_UF);
> -
> - pci_write_config_word(dev, pos + PCI_ACS_CTRL, ctrl);
> -}
> -
> -/**
> - * pci_enable_acs - enable ACS if hardware support it
> - * @dev: the PCI device
> - */
> -void pci_enable_acs(struct pci_dev *dev)
> -{
> - if (!pci_acs_enable)
> - goto disable_acs_redir;
> -
> - if (!pci_dev_specific_enable_acs(dev))
> - goto disable_acs_redir;
> -
> - pci_std_enable_acs(dev);
> -
> -disable_acs_redir:
> - /*
> - * Note: pci_disable_acs_redir() must be called even if ACS was not
> - * enabled by the kernel because it may have been enabled by
> - * platform firmware. So if we are told to disable it, we should
> - * always disable it after setting the kernel's default
> - * preferences.
> - */
> - pci_disable_acs_redir(dev);
> -}
> -
> static bool pci_acs_flags_enabled(struct pci_dev *pdev, u16 acs_flags)
> {
> int pos;
> --
> 2.27.0.212.ge8ba1cc988-goog
>