Search Linux Wireless

Re: [PATCH] wlcore: consolidate kmalloc + memset 0 into kzalloc

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

On Tue, Dec 22, 2015 at 3:47 AM, Nicholas Mc Guire <hofrat@xxxxxxxxx> wrote:
> This is an API consolidation only. The use of kmalloc + memset to 0
> is equivalent to kzalloc.
>
> Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
> ---
>
> Found by coccinelle script (relaxed version of
> scripts/coccinelle/api/alloc/kzalloc-simple.cocci)
>
> Patch was compile tested with: x86_64_defconfig +
> CONFIG_WL12XX=m (implies CONFIG_WLCORE=m)
>
> Patch is against linux-next (localversion-next is -next-20151221)
>
>  drivers/net/wireless/ti/wlcore/main.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
> index ec7f6af..dfc49bf 100644
> --- a/drivers/net/wireless/ti/wlcore/main.c
> +++ b/drivers/net/wireless/ti/wlcore/main.c
> @@ -838,7 +838,7 @@ static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
>
>         wl1271_info("Reading FW panic log");
>
> -       block = kmalloc(wl->fw_mem_block_size, GFP_KERNEL);
> +       block = kzalloc(wl->fw_mem_block_size, GFP_KERNEL);
>         if (!block)
>                 return;
>
> @@ -885,7 +885,6 @@ static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
>                         goto out;
>                 }
> -               memset(block, 0, wl->fw_mem_block_size);

I don't think you can't remove this line. It appears that the loop
this is part of resets block to be all zero, reads a chunk of data in,
then operates on it. I'm guessing that the code after the following
line expects that there isn't any data left over from previous runs
through the loop.

>                 ret = wlcore_read_hwaddr(wl, addr, block,
>                                         wl->fw_mem_block_size, false);
>
> --
> 2.1.4
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html



-- 
Julian Calaby

Email: julian.calaby@xxxxxxxxx
Profile: http://www.google.com/profiles/julian.calaby/
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Wireless Personal Area Network]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite Hiking]     [MIPS Linux]     [ARM Linux]     [Linux RAID]

  Powered by Linux