2019-11-26 17:58:17

by Phong Tran

Subject: [Patch v2 4/4] rtlwifi: rtl_pci: Fix -Wcast-function-type

correct usage prototype of callback in tasklet_init().
Report by https://github.com/KSPP/linux/issues/20

Signed-off-by: Phong Tran <[email protected]>
---
drivers/net/wireless/realtek/rtlwifi/pci.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
index f88d26535978..25335bd2873b 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -1061,13 +1061,15 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
return ret;
}

-static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
+static void _rtl_pci_irq_tasklet(unsigned long data)
{
+ struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
_rtl_pci_tx_chk_waitq(hw);
}

-static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
+static void _rtl_pci_prepare_bcn_tasklet(unsigned long data)
{
+ struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
@@ -1193,10 +1195,10 @@ static void _rtl_pci_init_struct(struct ieee80211_hw *hw,

/*task */
tasklet_init(&rtlpriv->works.irq_tasklet,
- (void (*)(unsigned long))_rtl_pci_irq_tasklet,
+ _rtl_pci_irq_tasklet,
(unsigned long)hw);
tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
- (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
+ _rtl_pci_prepare_bcn_tasklet,
(unsigned long)hw);
INIT_WORK(&rtlpriv->works.lps_change_work,
rtl_lps_change_work_callback);
--
2.20.1

2019-11-27 05:08:57

by Kees Cook

Subject: Re: [Patch v2 4/4] rtlwifi: rtl_pci: Fix -Wcast-function-type

On Wed, Nov 27, 2019 at 12:55:29AM +0700, Phong Tran wrote:
> correct usage prototype of callback in tasklet_init().
> Report by https://github.com/KSPP/linux/issues/20
>
> Signed-off-by: Phong Tran <[email protected]>

Reviewed-by: Kees Cook <[email protected]>

-Kees

> ---
> drivers/net/wireless/realtek/rtlwifi/pci.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
> index f88d26535978..25335bd2873b 100644
> --- a/drivers/net/wireless/realtek/rtlwifi/pci.c
> +++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
> @@ -1061,13 +1061,15 @@ static irqreturn_t _rtl_pci_interrupt(int irq, void *dev_id)
> return ret;
> }
>
> -static void _rtl_pci_irq_tasklet(struct ieee80211_hw *hw)
> +static void _rtl_pci_irq_tasklet(unsigned long data)
> {
> + struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
> _rtl_pci_tx_chk_waitq(hw);
> }
>
> -static void _rtl_pci_prepare_bcn_tasklet(struct ieee80211_hw *hw)
> +static void _rtl_pci_prepare_bcn_tasklet(unsigned long data)
> {
> + struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
> struct rtl_priv *rtlpriv = rtl_priv(hw);
> struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
> struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
> @@ -1193,10 +1195,10 @@ static void _rtl_pci_init_struct(struct ieee80211_hw *hw,
>
> /*task */
> tasklet_init(&rtlpriv->works.irq_tasklet,
> - (void (*)(unsigned long))_rtl_pci_irq_tasklet,
> + _rtl_pci_irq_tasklet,
> (unsigned long)hw);
> tasklet_init(&rtlpriv->works.irq_prepare_bcn_tasklet,
> - (void (*)(unsigned long))_rtl_pci_prepare_bcn_tasklet,
> + _rtl_pci_prepare_bcn_tasklet,
> (unsigned long)hw);
> INIT_WORK(&rtlpriv->works.lps_change_work,
> rtl_lps_change_work_callback);
> --
> 2.20.1
>

--
Kees Cook