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| author | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2021-10-25 17:49:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-02 20:26:44 +0300 |
| commit | 4a9043ba1b0e9bea1da0fe34366222974f2c0f92 (patch) | |
| tree | e5ab75da4efb95dff32b13eeabcb8d55078079d5 /drivers/nfc/port100.c | |
| parent | a36119f9b3fb069437383a8eff4e65181b6e7e2f (diff) | |
| download | linux-4a9043ba1b0e9bea1da0fe34366222974f2c0f92.tar.xz | |
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/port100.c')
| -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 06bb226c62ef..0f37acec98ab 100644 --- a/drivers/nfc/port100.c +++ b/drivers/nfc/port100.c @@ -1012,11 +1012,11 @@ 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; |