From: Dan Carpenter Date: Fri, 21 Apr 2017 22:49:56 +0000 (-0600) Subject: lightnvm: don't print a warning for ADDR_EMPTY X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=659226eb630ff522b30d8b8a82c9e722756e6bd4;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git lightnvm: don't print a warning for ADDR_EMPTY Reading from ADDR_EMPTY is out of bounds. The current code generates a static checker warning because we check for out of bounds "lba" before we check for ADDR_EMPTY, so the second check is always false. It looks like we intended ADDR_EMPTY to be a no-op without printing a warning. Fixes: a4bd217b4326 ("lightnvm: physical block device (pblk) target") Signed-off-by: Dan Carpenter Reviewed-by: Javier González Signed-off-by: Jens Axboe --- diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index c9daa33e8d9c..4a12f14d78c6 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -410,15 +410,15 @@ static int read_rq_gc(struct pblk *pblk, struct nvm_rq *rqd, struct ppa_addr ppa; int valid_secs = 0; + if (lba == ADDR_EMPTY) + goto out; + /* logic error: lba out-of-bounds */ if (lba >= pblk->rl.nr_secs) { WARN(1, "pblk: read lba out of bounds\n"); goto out; } - if (lba == ADDR_EMPTY) - goto out; - spin_lock(&pblk->trans_lock); ppa = pblk_trans_map_get(pblk, lba); spin_unlock(&pblk->trans_lock);