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Wed, 05 Aug 2026 05:19:15 -0700 (PDT) Date: Wed, 5 Aug 2026 17:49:09 +0530 From: Supreet Singh To: Greg Kroah-Hartman Cc: Viresh Kumar , Rui Miguel Silva , Johan Hovold , Alex Elder , greybus-dev@lists.linaro.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] staging: greybus: spilib: Handle SPI device types with a switch statement Message-ID: References: <20260805111958.114209-1-singh.supreet14@gmail.com> <2026080508-stifle-qualm-3dd7@gregkh> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2026080508-stifle-qualm-3dd7@gregkh> On Wed, Aug 05, 2026 at 01:28:47PM +0200, Greg Kroah-Hartman wrote: > On Wed, Aug 05, 2026 at 04:49:57PM +0530, singh.supreet14@gmail.com wrote: > > From: Supreet > > We need a full name please. > > > > > > Replaced the if/else chain with switch statement. makes it easier to > > extend support for additional device types. > > > > Remove the temporary spidev variable since it is only used to test the > > return value of spi_new_device(). Call spi_new_device() directly in > > the conditional instead. > > > > checkpatch was run, had no warnings and errors. > > > > Signed-off-by: Supreet > > --- > > drivers/staging/greybus/spilib.c | 19 +++++++++++-------- > > 1 file changed, 11 insertions(+), 8 deletions(-) > > > > diff --git a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c > > index e4d1ae8308aa..53fc0c124754 100644 > > --- a/drivers/staging/greybus/spilib.c > > +++ b/drivers/staging/greybus/spilib.c > > @@ -444,7 +444,6 @@ static int gb_spi_setup_device(struct gb_spilib *spi, u8 cs) > > struct gb_spi_device_config_request request; > > struct gb_spi_device_config_response response; > > struct spi_board_info spi_board = { {0} }; > > - struct spi_device *spidev; > > int ret; > > u8 dev_type; > > > > @@ -458,25 +457,29 @@ static int gb_spi_setup_device(struct gb_spilib *spi, u8 cs) > > > > dev_type = response.device_type; > > > > - if (dev_type == GB_SPI_SPI_DEV) > > + switch (dev_type) { > > + case GB_SPI_SPI_DEV: > > strscpy(spi_board.modalias, "spidev", > > sizeof(spi_board.modalias)); > > - else if (dev_type == GB_SPI_SPI_NOR) > > + break; > > + case GB_SPI_SPI_NOR: > > strscpy(spi_board.modalias, "spi-nor", > > sizeof(spi_board.modalias)); > > - else if (dev_type == GB_SPI_SPI_MODALIAS) > > + break; > > + case GB_SPI_SPI_MODALIAS: > > memcpy(spi_board.modalias, response.name, > > - sizeof(spi_board.modalias)); > > - else > > + sizeof(spi_board.modalias)); > > + break; > > + default: > > return -EINVAL; > > + } > > > > spi_board.mode = le16_to_cpu(response.mode); > > spi_board.bus_num = ctlr->bus_num; > > spi_board.chip_select = cs; > > spi_board.max_speed_hz = le32_to_cpu(response.max_speed_hz); > > > > - spidev = spi_new_device(ctlr, &spi_board); > > - if (!spidev) > > + if (!spi_new_device(ctlr, &spi_board)) > > Why was this change made? It's a different one than the switch > statement, right? > > thanks, > > greg k-h Hi Greg Yes, you are right, the `spidev` change is independent of the switch statement. My intention was to remove the temporary variable as it was only used to check the return value of the `spi_new_device()`. I will drop that change, and send a v2 focused only on the switch statement. If appropriate I can send that cleanup as a separate patch. Apologies for the last email, first time using mutt. Thanks Supreet Singh