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SubjectRe: [PATCH v1 2/2] spi: stm32-qspi: Refactor dual flash mode enable check in ->setup()
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HI Andy

On 8/30/22 20:28, Andy Shevchenko wrote:
> gpiod_count() either returns positive number of the CS or negative
> error code. In the stm32_qspi_setup() we check that configuration
> has enough CS for the dual flash mode and SPI mode is not changing
> over the lines of the code. Taking all above into considertion,
> refactor dual flash mode enable check by dropping unneeded CS check
> and reusing local mode variable.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/spi/spi-stm32-qspi.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/spi/spi-stm32-qspi.c b/drivers/spi/spi-stm32-qspi.c
> index 5858f5f9c758..9131660c1afb 100644
> --- a/drivers/spi/spi-stm32-qspi.c
> +++ b/drivers/spi/spi-stm32-qspi.c
> @@ -680,8 +680,7 @@ static int stm32_qspi_setup(struct spi_device *spi)
> * Dual flash mode is only enable in case SPI_TX_OCTAL and SPI_TX_OCTAL
> * are both set in spi->mode and "cs-gpios" properties is found in DT
> */
> - if (((spi->mode & (SPI_TX_OCTAL | SPI_RX_OCTAL)) == (SPI_TX_OCTAL | SPI_RX_OCTAL)) &&
> - gpiod_count(qspi->dev, "cs")) {
> + if (mode == (SPI_TX_OCTAL | SPI_RX_OCTAL)) {
> qspi->cr_reg |= CR_DFM;
> dev_dbg(qspi->dev, "Dual flash mode enable");
> }

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

Thanks
Patrice

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