This is a note to let you know that I've just added the patch titled
wifi: brcmsmac: avoid function pointer casts
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-brcmsmac-avoid-function-pointer-casts.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3700e9f834d8804e0ac6942295d6f89020388e5c
Author: Arnd Bergmann <arnd@xxxxxxxx>
Date: Tue Feb 13 11:05:37 2024 +0100
wifi: brcmsmac: avoid function pointer casts
[ Upstream commit e1ea6db35fc3ba5ff063f097385e9f7a88c25356 ]
An old cleanup went a little too far and causes a warning with clang-16
and higher as it breaks control flow integrity (KCFI) rules:
drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c:64:34: error: cast from 'void (*)(struct brcms_phy *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
64 | brcms_init_timer(physhim->wl, (void (*)(void *))fn,
| ^~~~~~~~~~~~~~~~~~~~
Change this one instance back to passing a void pointer so it can be
used with the timer callback interface.
Fixes: d89a4c80601d ("staging: brcm80211: removed void * from softmac phy")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://msgid.link/20240213100548.457854-1-arnd@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
index ccc621b8ed9f2..4a1fe982a948e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_cmn.c
@@ -383,8 +383,9 @@ struct shared_phy *wlc_phy_shared_attach(struct shared_phy_params *shp)
return sh;
}
-static void wlc_phy_timercb_phycal(struct brcms_phy *pi)
+static void wlc_phy_timercb_phycal(void *ptr)
{
+ struct brcms_phy *pi = ptr;
uint delay = 5;
if (PHY_PERICAL_MPHASE_PENDING(pi)) {
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c
index a0de5db0cd646..b723817915365 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.c
@@ -57,12 +57,11 @@ void wlc_phy_shim_detach(struct phy_shim_info *physhim)
}
struct wlapi_timer *wlapi_init_timer(struct phy_shim_info *physhim,
- void (*fn)(struct brcms_phy *pi),
+ void (*fn)(void *pi),
void *arg, const char *name)
{
return (struct wlapi_timer *)
- brcms_init_timer(physhim->wl, (void (*)(void *))fn,
- arg, name);
+ brcms_init_timer(physhim->wl, fn, arg, name);
}
void wlapi_free_timer(struct wlapi_timer *t)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.h b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.h
index dd8774717adee..27d0934e600ed 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy_shim.h
@@ -131,7 +131,7 @@ void wlc_phy_shim_detach(struct phy_shim_info *physhim);
/* PHY to WL utility functions */
struct wlapi_timer *wlapi_init_timer(struct phy_shim_info *physhim,
- void (*fn)(struct brcms_phy *pi),
+ void (*fn)(void *pi),
void *arg, const char *name);
void wlapi_free_timer(struct wlapi_timer *t);
void wlapi_add_timer(struct wlapi_timer *t, uint ms, int periodic);
