diff mbox series

[5/6,v2] wifi: libertas: handle possible spu_write_u16() errors

Message ID 20230725060531.72968-5-dmantipov@yandex.ru (mailing list archive)
State Accepted
Commit 3e14212f79fd05c4f5bdfa4eba5ae53f75900410
Delegated to: Kalle Valo
Headers show
Series [1/6,v2] wifi: libertas: add missing calls to cancel_work_sync() | expand

Commit Message

Dmitry Antipov July 25, 2023, 6:04 a.m. UTC 
Check and handle (well, report at least, as it's done through the rest
of the module) possible 'spu_write_u16()' errors in 'if_spi_e2h()'.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
---
 drivers/net/wireless/marvell/libertas/if_spi.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/marvell/libertas/if_spi.c b/drivers/net/wireless/marvell/libertas/if_spi.c
index 3d53e444ba19..8690b0114e23 100644
--- a/drivers/net/wireless/marvell/libertas/if_spi.c
+++ b/drivers/net/wireless/marvell/libertas/if_spi.c
@@ -826,11 +826,16 @@  static void if_spi_e2h(struct if_spi_card *card)
 		goto out;
 
 	/* re-enable the card event interrupt */
-	spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG,
-			~IF_SPI_HICU_CARD_EVENT);
+	err = spu_write_u16(card, IF_SPI_HOST_INT_STATUS_REG,
+			    ~IF_SPI_HICU_CARD_EVENT);
+	if (err)
+		goto out;
 
 	/* generate a card interrupt */
-	spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG, IF_SPI_CIC_HOST_EVENT);
+	err = spu_write_u16(card, IF_SPI_CARD_INT_CAUSE_REG,
+			    IF_SPI_CIC_HOST_EVENT);
+	if (err)
+		goto out;
 
 	lbs_queue_event(priv, cause & 0xff);
 out: