During probing, the driver tries to get a list (mask) of supported
command types in port100_get_command_type_mask() function. The value
is u64 and 0 is treated as invalid mask (no commands supported). The
function however returns also -ERRNO as u64 which will be interpret as
valid command mask.
Return 0 on every error case of port100_get_command_type_mask(), so the
probing will stop.
Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx>
---
Changes since v1:
1. Drop debug code.
---
drivers/nfc/port100.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c
index 517376c43b86..16ceb763594f 100644
--- a/drivers/nfc/port100.c
+++ b/drivers/nfc/port100.c
@@ -1006,11 +1006,11 @@ static u64 port100_get_command_type_mask(struct port100 *dev)
skb = port100_alloc_skb(dev, 0);
if (!skb)
- return -ENOMEM;
+ return 0;
resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb);
if (IS_ERR(resp))
- return PTR_ERR(resp);
+ return 0;
if (resp->len < 8)
mask = 0;
--
2.30.2
