diff options
| author | Lars Poeschel <poeschel@lemonage.de> | 2019-11-13 14:50:22 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-13 12:15:03 -0800 |
| commit | 1e37be7d27d086ca72c38af14a9783eb9d7e9fa9 (patch) | |
| tree | 3939db915c22bbabb562fd07098289ec93f8c591 /drivers/nfc/pn533/uart.c | |
| parent | d73cfd4283d9090b45337a93dddc43848039f14b (diff) | |
nfc: pn533: pn533_phy_ops dev_[up, down] return int
Change dev_up and dev_down functions of struct pn533_phy_ops to return
int. This way the pn533 core can report errors in the phy layer to upper
layers.
The only user of this is currently uart.c and it is changed to report
the error of a possibly failing call to serdev_device_open.
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 1487395 ("Error handling issues")
Fixes: c656aa4c27b1 ("nfc: pn533: add UART phy driver")
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/nfc/pn533/uart.c')
| -rw-r--r-- | drivers/nfc/pn533/uart.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/nfc/pn533/uart.c b/drivers/nfc/pn533/uart.c index 46e5ff16f699..a0665d8ea85b 100644 --- a/drivers/nfc/pn533/uart.c +++ b/drivers/nfc/pn533/uart.c @@ -100,20 +100,27 @@ static void pn532_uart_abort_cmd(struct pn533 *dev, gfp_t flags) pn533_recv_frame(dev, NULL, -ENOENT); } -static void pn532_dev_up(struct pn533 *dev) +static int pn532_dev_up(struct pn533 *dev) { struct pn532_uart_phy *pn532 = dev->phy; + int ret = 0; + + ret = serdev_device_open(pn532->serdev); + if (ret) + return ret; - serdev_device_open(pn532->serdev); pn532->send_wakeup = PN532_SEND_LAST_WAKEUP; + return ret; } -static void pn532_dev_down(struct pn533 *dev) +static int pn532_dev_down(struct pn533 *dev) { struct pn532_uart_phy *pn532 = dev->phy; serdev_device_close(pn532->serdev); pn532->send_wakeup = PN532_SEND_WAKEUP; + + return 0; } static struct pn533_phy_ops uart_phy_ops = { |