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Subject[PATCH v2] crypto: cavium/nitrox - Fix 'nitrox_get_first_device()' when ndevlist is fully iterated
Date
When a list is completely iterated with 'list_for_each_entry(x, ...)', x is
not NULL at the end.

While at it, remove a useless initialization of the ndev variable. It
is overridden by 'list_for_each_entry'.

Fixes: f2663872f073 ("crypto: cavium - Register the CNN55XX supported crypto algorithms.")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
v2: Do not introduce an extra variable to check if the list has been fully
iterated. Test with "if (&ndev->list == &ndevlist)" instead
---
drivers/crypto/cavium/nitrox/nitrox_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/cavium/nitrox/nitrox_main.c b/drivers/crypto/cavium/nitrox/nitrox_main.c
index 788c6607078b..cee2a2713038 100644
--- a/drivers/crypto/cavium/nitrox/nitrox_main.c
+++ b/drivers/crypto/cavium/nitrox/nitrox_main.c
@@ -278,7 +278,7 @@ static void nitrox_remove_from_devlist(struct nitrox_device *ndev)

struct nitrox_device *nitrox_get_first_device(void)
{
- struct nitrox_device *ndev = NULL;
+ struct nitrox_device *ndev;

mutex_lock(&devlist_lock);
list_for_each_entry(ndev, &ndevlist, list) {
@@ -286,7 +286,7 @@ struct nitrox_device *nitrox_get_first_device(void)
break;
}
mutex_unlock(&devlist_lock);
- if (!ndev)
+ if (&ndev->list == &ndevlist)
return NULL;

refcount_inc(&ndev->refcnt);
--
2.25.1
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