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authorBart Van Assche <bvanassche@acm.org>2019-02-15 01:50:54 +0300
committerChristoph Hellwig <hch@lst.de>2019-02-20 17:18:07 +0300
commite895fedf12dc0663a925b54eb0961fc927208097 (patch)
treef7ab2d70f5aa53586ba11c23442ba06225bfd91d
parenta467fc55fc509e034e3f839dc1f6ceed74462da9 (diff)
downloadlinux-e895fedf12dc0663a925b54eb0961fc927208097.tar.xz
nvme-pci: check kstrtoint() return value in queue_count_set()
This patch avoids that the compiler complains about 'ret' being set but not being used when building with W=1. Fixes: 3b6592f70ad7 ("nvme: utilize two queue maps, one for reads and one for writes") # v5.0-rc1 Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
-rw-r--r--drivers/nvme/host/pci.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 022ea1ee63f8..84ed1bbce86b 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -157,6 +157,8 @@ static int queue_count_set(const char *val, const struct kernel_param *kp)
int n = 0, ret;
ret = kstrtoint(val, 10, &n);
+ if (ret)
+ return ret;
if (n > num_possible_cpus())
n = num_possible_cpus();