In preparation to fixing a leak in isys_probe(), move isys_remove().
The fix will introduce a new function that will also be called from
isys_remove(). The code needs to be rearranged to avoid a forward
declaration.
Having the .remove function close to the .probe function is also more
standard.
Signed-off-by: Christophe JAILLET <[email protected]>
---
Changes in v2:
- new patch
---
drivers/media/pci/intel/ipu6/ipu6-isys.c | 70 ++++++++++++------------
1 file changed, 35 insertions(+), 35 deletions(-)
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.c b/drivers/media/pci/intel/ipu6/ipu6-isys.c
index 5992138c7290..7ce2047a09b5 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys.c
@@ -925,41 +925,6 @@ static const struct dev_pm_ops isys_pm_ops = {
.resume = isys_resume,
};
-static void isys_remove(struct auxiliary_device *auxdev)
-{
- struct ipu6_bus_device *adev = auxdev_to_adev(auxdev);
- struct ipu6_isys *isys = dev_get_drvdata(&auxdev->dev);
- struct ipu6_device *isp = adev->isp;
- struct isys_fw_msgs *fwmsg, *safe;
- unsigned int i;
-
- list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist, head)
- dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
- fwmsg, fwmsg->dma_addr, 0);
-
- list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist_fw, head)
- dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
- fwmsg, fwmsg->dma_addr, 0);
-
- isys_unregister_devices(isys);
- isys_notifier_cleanup(isys);
-
- cpu_latency_qos_remove_request(&isys->pm_qos);
-
- if (!isp->secure_mode) {
- ipu6_cpd_free_pkg_dir(adev);
- ipu6_buttress_unmap_fw_image(adev, &adev->fw_sgt);
- release_firmware(adev->fw);
- }
-
- for (i = 0; i < IPU6_ISYS_MAX_STREAMS; i++)
- mutex_destroy(&isys->streams[i].mutex);
-
- isys_iwake_watermark_cleanup(isys);
- mutex_destroy(&isys->stream_mutex);
- mutex_destroy(&isys->mutex);
-}
-
static int alloc_fw_msg_bufs(struct ipu6_isys *isys, int amount)
{
struct device *dev = &isys->adev->auxdev.dev;
@@ -1167,6 +1132,41 @@ static int isys_probe(struct auxiliary_device *auxdev,
return ret;
}
+static void isys_remove(struct auxiliary_device *auxdev)
+{
+ struct ipu6_bus_device *adev = auxdev_to_adev(auxdev);
+ struct ipu6_isys *isys = dev_get_drvdata(&auxdev->dev);
+ struct ipu6_device *isp = adev->isp;
+ struct isys_fw_msgs *fwmsg, *safe;
+ unsigned int i;
+
+ list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist, head)
+ dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
+ fwmsg, fwmsg->dma_addr, 0);
+
+ list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist_fw, head)
+ dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
+ fwmsg, fwmsg->dma_addr, 0);
+
+ isys_unregister_devices(isys);
+ isys_notifier_cleanup(isys);
+
+ cpu_latency_qos_remove_request(&isys->pm_qos);
+
+ if (!isp->secure_mode) {
+ ipu6_cpd_free_pkg_dir(adev);
+ ipu6_buttress_unmap_fw_image(adev, &adev->fw_sgt);
+ release_firmware(adev->fw);
+ }
+
+ for (i = 0; i < IPU6_ISYS_MAX_STREAMS; i++)
+ mutex_destroy(&isys->streams[i].mutex);
+
+ isys_iwake_watermark_cleanup(isys);
+ mutex_destroy(&isys->stream_mutex);
+ mutex_destroy(&isys->mutex);
+}
+
struct fwmsg {
int type;
char *msg;
--
2.45.1
If an error occurs after a successful alloc_fw_msg_bufs() call, some
resources should be released as already done in the remove function.
Add a new free_fw_msg_bufs() function that releases what has been allocated
by alloc_fw_msg_bufs().
Also use this new function in isys_remove() to avoid some code duplication.
Fixes: f50c4ca0a820 ("media: intel/ipu6: add the main input system driver")
Signed-off-by: Christophe JAILLET <[email protected]>
---
Compile tested only.
I'm slightly puzzled by the use of the _safe version of
list_for_each_entry(). Is it really needed here.
Also, should isys->listlock be used?
The code looks racy to me.
Changes in v2:
- Introduce and use free_fw_msg_bufs() [Sakari Ailus]
v1: https://lore.kernel.org/all/545315bcaac0a897c25cfa20a603be2af2a40aa9.1716201136.git.christophe.jaillet@wanadoo.fr/
---
drivers/media/pci/intel/ipu6/ipu6-isys.c | 27 ++++++++++++++++--------
1 file changed, 18 insertions(+), 9 deletions(-)
diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.c b/drivers/media/pci/intel/ipu6/ipu6-isys.c
index 7ce2047a09b5..1998b72ac07d 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys.c
@@ -925,6 +925,20 @@ static const struct dev_pm_ops isys_pm_ops = {
.resume = isys_resume,
};
+static void free_fw_msg_bufs(struct ipu6_isys *isys)
+{
+ struct device *dev = &isys->adev->auxdev.dev;
+ struct isys_fw_msgs *fwmsg, *safe;
+
+ list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist, head)
+ dma_free_attrs(dev, sizeof(struct isys_fw_msgs), fwmsg,
+ fwmsg->dma_addr, 0);
+
+ list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist_fw, head)
+ dma_free_attrs(dev, sizeof(struct isys_fw_msgs), fwmsg,
+ fwmsg->dma_addr, 0);
+}
+
static int alloc_fw_msg_bufs(struct ipu6_isys *isys, int amount)
{
struct device *dev = &isys->adev->auxdev.dev;
@@ -1105,12 +1119,14 @@ static int isys_probe(struct auxiliary_device *auxdev,
ret = isys_register_devices(isys);
if (ret)
- goto out_remove_pkg_dir_shared_buffer;
+ goto free_fw_msg_bufs;
ipu6_mmu_hw_cleanup(adev->mmu);
return 0;
+free_fw_msg_bufs:
+ free_fw_msg_bufs(isys);
out_remove_pkg_dir_shared_buffer:
if (!isp->secure_mode)
ipu6_cpd_free_pkg_dir(adev);
@@ -1137,16 +1153,9 @@ static void isys_remove(struct auxiliary_device *auxdev)
struct ipu6_bus_device *adev = auxdev_to_adev(auxdev);
struct ipu6_isys *isys = dev_get_drvdata(&auxdev->dev);
struct ipu6_device *isp = adev->isp;
- struct isys_fw_msgs *fwmsg, *safe;
unsigned int i;
- list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist, head)
- dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
- fwmsg, fwmsg->dma_addr, 0);
-
- list_for_each_entry_safe(fwmsg, safe, &isys->framebuflist_fw, head)
- dma_free_attrs(&auxdev->dev, sizeof(struct isys_fw_msgs),
- fwmsg, fwmsg->dma_addr, 0);
+ free_fw_msg_bufs(isys);
isys_unregister_devices(isys);
isys_notifier_cleanup(isys);
--
2.45.1