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[87.245.175.227]) by smtp.gmail.com with ESMTPSA id bp41-20020a05651215a900b00516d6924bc6sm793551lfb.175.2024.04.16.08.53.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Apr 2024 08:53:09 -0700 (PDT) From: Serge Semin To: Serge Semin , Mark Brown , Andy Shevchenko Cc: Andy Shevchenko , Andy Shevchenko , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH RESEND v3 4/4] spi: dw: Drop default number of CS setting Date: Tue, 16 Apr 2024 18:52:34 +0300 Message-ID: <20240416155257.22429-5-fancer.lancer@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240416155257.22429-1-fancer.lancer@gmail.com> References: <20240416155257.22429-1-fancer.lancer@gmail.com> Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 DW APB/AHB SSI core now supports the procedure automatically detecting the number of native chip-select lines. Thus there is no longer point in defaulting to four CS if the platform doesn't specify the real number especially seeing the default number didn't correspond to any original DW APB/AHB databook. Signed-off-by: Serge Semin Reviewed-by: Andy Shevchenko --- Changelog v2: - Drop temporal variable and pass dws_spi::num_cs directly. --- drivers/spi/spi-dw-mmio.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index cc74cbe03431..c56de35eca98 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -320,7 +320,6 @@ static int dw_spi_mmio_probe(struct platform_device *pdev) struct resource *mem; struct dw_spi *dws; int ret; - int num_cs; dwsmmio = devm_kzalloc(&pdev->dev, sizeof(struct dw_spi_mmio), GFP_KERNEL); @@ -364,11 +363,8 @@ static int dw_spi_mmio_probe(struct platform_device *pdev) &dws->reg_io_width)) dws->reg_io_width = 4; - num_cs = 4; - - device_property_read_u32(&pdev->dev, "num-cs", &num_cs); - - dws->num_cs = num_cs; + /* Rely on the auto-detection if no property specified */ + device_property_read_u32(&pdev->dev, "num-cs", &dws->num_cs); init_func = device_get_match_data(&pdev->dev); if (init_func) {