Messages in this thread Patch in this message | | | Date | Tue, 9 Mar 2010 22:13:49 +0100 (CET) | From | Julia Lawall <> | Subject | [PATCH 1/5] drivers/media: drop redundant memset |
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From: Julia Lawall <julia@diku.dk>
The region set by the call to memset is immediately overwritten by the subsequent call to memcpy.
The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ expression e1,e2,e3,e4; @@
- memset(e1,e2,e3); memcpy(e1,e4,e3); // </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
--- drivers/media/dvb/bt8xx/dst.c | 2 -- 1 file changed, 2 deletions(-)
diff -u -p a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c --- a/drivers/media/dvb/bt8xx/dst.c +++ b/drivers/media/dvb/bt8xx/dst.c @@ -930,7 +930,6 @@ static int dst_fw_ver(struct dst_state * dprintk(verbose, DST_INFO, 1, "Unsupported Command"); return -1; } - memset(&state->fw_version, '\0', 8); memcpy(&state->fw_version, &state->rxbuffer, 8); dprintk(verbose, DST_ERROR, 1, "Firmware Ver = %x.%x Build = %02x, on %x:%x, %x-%x-20%02x", state->fw_version[0] >> 4, state->fw_version[0] & 0x0f, @@ -1053,7 +1052,6 @@ static int dst_get_tuner_info(struct dst goto force; } } - memset(&state->board_info, '\0', 8); memcpy(&state->board_info, &state->rxbuffer, 8); if (state->type_flags & DST_TYPE_HAS_MULTI_FE) { dprintk(verbose, DST_ERROR, 1, "DST type has TS=188");
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