On 07/09/2015 08:25 PM, Arend van Spriel wrote:
On 07/09/2015 10:13 AM, Vineet Gupta wrote:
There's already a generic implementation so use that instead.
There is or there was? If there is now I am fine with this patch, but if
it already was there the author might have had a reason for adding a
local function and I would like to hear that reason.
Nevermind. Just noticed you are proposing the generic implementation in
this series. Currently on vacation and want to discuss with Hante about
this change.
Regards,
Arend
---
I'm not sure if the driver usage of atomic_or?() is correct in terms of
storage size of @val for 64 bit arches.
Assuming LP64 programming model for linux on say x86_64: atomic_or()
callers in this driver use long (sana 64 bit) storage and pass it to
atomic_orr/atomic_or which downcasts it to 32 bits. Is that OK ?
The function is used with 32bit register value from the device so I
think it is ok.
Regards,
Arend
---
Cc: Brett Rudley <brudley@xxxxxxxxxxxx>
Cc: Arend van Spriel <arend@xxxxxxxxxxxx>
Cc: "Franky (Zhenhui) Lin" <frankyl@xxxxxxxxxxxx>
Cc: Hante Meuleman <meuleman@xxxxxxxxxxxx>
Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Cc: Daniel Kim <dekim@xxxxxxxxxxxx>
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: brcm80211-dev-list@xxxxxxxxxxxx
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-arch@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
---
drivers/net/wireless/brcm80211/brcmfmac/sdio.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/sdio.c
b/drivers/net/wireless/brcm80211/brcmfmac/sdio.c
index d36f5f3d931b..f990e3d0e696 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/sdio.c
@@ -2564,15 +2564,6 @@ static inline void brcmf_sdio_clrintr(struct
brcmf_sdio *bus)
}
}
-static void atomic_orr(int val, atomic_t *v)
-{
- int old_val;
-
- old_val = atomic_read(v);
- while (atomic_cmpxchg(v, old_val, val | old_val) != old_val)
- old_val = atomic_read(v);
-}
-
static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus)
{
struct brcmf_core *buscore;
@@ -2595,7 +2586,7 @@ static int brcmf_sdio_intr_rstatus(struct
brcmf_sdio *bus)
if (val) {
brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret);
bus->sdcnt.f1regdata++;
- atomic_orr(val, &bus->intstatus);
+ atomic_or(val, &bus->intstatus);
}
return ret;
@@ -2712,7 +2703,7 @@ static void brcmf_sdio_dpc(struct brcmf_sdio *bus)
/* Keep still-pending events for next scheduling */
if (intstatus)
- atomic_orr(intstatus, &bus->intstatus);
+ atomic_or(intstatus, &bus->intstatus);
brcmf_sdio_clrintr(bus);
--
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