linux-stable/drivers/nfc/s3fwrn5
Francesco Dolcini fed99212ac treewide, serdev: change receive_buf() return type to size_t
receive_buf() is called from ttyport_receive_buf() that expects values
">= 0" from serdev_controller_receive_buf(), change its return type from
ssize_t to size_t.

The need for this clean-up was noticed while fixing a warning, see
commit 94d0539425 ("Bluetooth: btnxpuart: fix recv_buf() return value").
Changing the callback prototype to return an unsigned seems the best way
to document the API and ensure that is properly used.

GNSS drivers implementation of serdev receive_buf() callback return
directly the return value of gnss_insert_raw(). gnss_insert_raw()
returns a signed int, however this is not an issue since the value
returned is always positive, because of the kfifo_in() implementation.
gnss_insert_raw() could be changed to return also an unsigned, however
this is not implemented here as request by the GNSS maintainer Johan
Hovold.

Suggested-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/all/087be419-ec6b-47ad-851a-5e1e3ea5cfcc@kernel.org/
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for-iio
Reviewed-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Acked-by: Maximilian Luz <luzmaximilian@gmail.com>  # for platform/surface
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240122180551.34429-1-francesco@dolcini.it
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-27 18:13:53 -08:00
..
Kconfig nfc: s3fwrn5: Support a UART interface 2020-12-02 17:55:25 -08:00
Makefile nfc: s3fwrn5: Support a UART interface 2020-12-02 17:55:25 -08:00
core.c nfc: s3fwrn5: Fix potential memory leak in s3fwrn5_nci_send() 2022-11-21 08:31:53 +00:00
firmware.c nfc: s3fwrn5: simplify dereferencing pointer to struct device 2021-10-11 17:00:51 -07:00
firmware.h nfc: s3fwrn5: skip the NFC bootloader mode 2020-12-04 15:30:47 -08:00
i2c.c nfc: Switch i2c drivers back to use .probe() 2023-05-22 11:41:57 +01:00
nci.c nfc: s3fwrn5: simplify dereferencing pointer to struct device 2021-10-11 17:00:51 -07:00
nci.h nfc: constify nci_driver_ops (prop_ops and core_ops) 2021-07-25 09:21:21 +01:00
phy_common.c nfc: s3fwrn5: Remove the delay for NFC sleep 2020-12-16 13:09:35 -08:00
phy_common.h nfc: s3fwrn5: Support a UART interface 2020-12-02 17:55:25 -08:00
s3fwrn5.h nfc: s3fwrn5: Change the error code 2020-11-18 17:42:13 -08:00
uart.c treewide, serdev: change receive_buf() return type to size_t 2024-01-27 18:13:53 -08:00