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| author | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2021-10-25 16:49:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-02 19:46:12 +0100 |
| commit | 9fdcf66ee413243d3040f572408fc2ffc3532987 (patch) | |
| tree | 2bbd792a276756afe8e9f7328c41865462974294 /drivers/nfc | |
| parent | 853f22623dd5fafe0ab73600eb55f06eac21faef (diff) | |
| download | linux-9fdcf66ee413243d3040f572408fc2ffc3532987.tar.gz linux-9fdcf66ee413243d3040f572408fc2ffc3532987.tar.bz2 linux-9fdcf66ee413243d3040f572408fc2ffc3532987.zip | |
nfc: port100: fix using -ERRNO as command type mask
commit 2195f2062e4cc93870da8e71c318ef98a1c51cef upstream.
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@vger.kernel.org>
Fixes: 0347a6ab300a ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/port100.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c index 8e4d355dc3ae..1caebefb25ff 100644 --- a/drivers/nfc/port100.c +++ b/drivers/nfc/port100.c @@ -1003,11 +1003,11 @@ 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; |