From: Dan Carpenter Date: Mon, 10 Feb 2014 22:25:30 +0000 (-0800) Subject: drivers/misc/sgi-gru/grukdump.c: unlocking should be conditional in gru_dump_context() X-Git-Tag: v4.9.8~6928^2~19 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=49d3d6c37a322117b1eeb410a49165bb3d0441f7;p=platform%2Fkernel%2Flinux-rpi3.git drivers/misc/sgi-gru/grukdump.c: unlocking should be conditional in gru_dump_context() I was reviewing this and noticed that unlocking should be conditional on the error path. I've changed it to unlock and return directly since we only do it once and it seems unlikely to change in the near future. Signed-off-by: Dan Carpenter Acked-by: Dimitri Sivanich Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/misc/sgi-gru/grukdump.c b/drivers/misc/sgi-gru/grukdump.c index 9b2062d..2bef3f7 100644 --- a/drivers/misc/sgi-gru/grukdump.c +++ b/drivers/misc/sgi-gru/grukdump.c @@ -139,8 +139,11 @@ static int gru_dump_context(struct gru_state *gru, int ctxnum, ubuf += sizeof(hdr); ubufcch = ubuf; - if (gru_user_copy_handle(&ubuf, cch)) - goto fail; + if (gru_user_copy_handle(&ubuf, cch)) { + if (cch_locked) + unlock_cch_handle(cch); + return -EFAULT; + } if (cch_locked) ubufcch->delresp = 0; bytes = sizeof(hdr) + GRU_CACHE_LINE_BYTES; @@ -179,10 +182,6 @@ static int gru_dump_context(struct gru_state *gru, int ctxnum, ret = -EFAULT; return ret ? ret : bytes; - -fail: - unlock_cch_handle(cch); - return -EFAULT; } int gru_dump_chiplet_request(unsigned long arg)