2014-12-07 14:37:34

by Emil Renner Berthing

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Subject: [PATCH] drivers: staging: rtl8723au: get rid of unneeded memset/memcpy

This also fixes a sparse warning.

Signed-off-by: Emil Renner Berthing <[email protected]>
---
drivers/staging/rtl8723au/hal/rtl8723a_cmd.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
index 7b56411..d8c4c8b 100644
--- a/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
+++ b/drivers/staging/rtl8723au/hal/rtl8723a_cmd.c
@@ -124,14 +124,15 @@ int rtl8723a_set_rssi_cmd(struct rtw_adapter *padapter, u8 *param)

int rtl8723a_set_raid_cmd(struct rtw_adapter *padapter, u32 mask, u8 arg)
{
- u8 buf[5];
+ struct {
+ __le32 mask;
+ u8 arg;
+ } __packed buf;

- memset(buf, 0, 5);
- mask = cpu_to_le32(mask);
- memcpy(buf, &mask, 4);
- buf[4] = arg;
+ buf.mask = cpu_to_le32(mask);
+ buf.arg = arg;

- FillH2CCmd(padapter, MACID_CONFIG_EID, 5, buf);
+ FillH2CCmd(padapter, MACID_CONFIG_EID, 5, (u8 *)&buf);

return _SUCCESS;
}
--
2.1.3



2015-01-17 22:14:00

by Greg Kroah-Hartman

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Subject: Re: [PATCH] drivers: staging: rtl8723au: get rid of unneeded memset/memcpy

On Sun, Dec 07, 2014 at 03:37:20PM +0100, Emil Renner Berthing wrote:
> This also fixes a sparse warning.

What sparse warning? What's wrong with the original code? Unless Jes
resends this to me, I don't see the need to apply it, sorry.

greg k-h

2015-01-18 15:24:39

by Jes Sorensen

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Subject: Re: [PATCH] drivers: staging: rtl8723au: get rid of unneeded memset/memcpy

Greg Kroah-Hartman <[email protected]> writes:
> On Sun, Dec 07, 2014 at 03:37:20PM +0100, Emil Renner Berthing wrote:
>> This also fixes a sparse warning.
>
> What sparse warning? What's wrong with the original code? Unless Jes
> resends this to me, I don't see the need to apply it, sorry.

I agree, I cannot see what this is fixing, it does however add an ugly
cast.

If you want to change the paramters passed to FillH2CCmd() then change
the prototype and create something like struct h2c_cmd_arg{} and apply
that across the board.

NACK

Jes