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| author | Christopher Hill <ch6574@gmail.com> | 2020-05-25 21:00:00 -0400 |
|---|---|---|
| committer | Adrian Schmutzler <freifunk@adrianschmutzler.de> | 2020-06-15 21:16:18 +0200 |
| commit | 344e75eb2b5653ed350121b4a7beb292049c24c0 (patch) | |
| tree | 2e7d60da039f7bdb760bb9b8c76e63c76644424b /target/linux/generic/backport-5.4 | |
| parent | d64d5ed1425f4397d093c8777ca03f70ff1ee90c (diff) | |
| download | upstream-344e75eb2b5653ed350121b4a7beb292049c24c0.tar.gz upstream-344e75eb2b5653ed350121b4a7beb292049c24c0.tar.bz2 upstream-344e75eb2b5653ed350121b4a7beb292049c24c0.zip | |
ath79: patch upstream Mikrotik rb4xx-spi driver to be device tree aware
Backport upstream patches that make drivers/spi/spi-rb4xx.c device tree
aware, plus a null pointer fix.
Signed-off-by: Christopher Hill <ch6574@gmail.com>
Diffstat (limited to 'target/linux/generic/backport-5.4')
2 files changed, 112 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/825-v5.8-spi-rb4xx-null-pointer-bug-fix.patch b/target/linux/generic/backport-5.4/825-v5.8-spi-rb4xx-null-pointer-bug-fix.patch new file mode 100644 index 0000000000..5d762c571c --- /dev/null +++ b/target/linux/generic/backport-5.4/825-v5.8-spi-rb4xx-null-pointer-bug-fix.patch @@ -0,0 +1,50 @@ +From: Christopher Hill <ch6574@gmail.com> +To: Mark Brown <broonie@kernel.org> +Cc: Christopher Hill <ch6574@gmail.com>, linux-spi@vger.kernel.org, + linux-kernel@vger.kernel.org +Subject: [PATCH 1/3] spi: rb4xx: null pointer bug fix +Date: Thu, 21 May 2020 14:36:29 -0400 +Message-Id: <20200521183631.37806-1-ch6574@gmail.com> +X-Mailer: git-send-email 2.25.1 +MIME-Version: 1.0 +Sender: linux-spi-owner@vger.kernel.org +Precedence: bulk +List-ID: <linux-spi.vger.kernel.org> +X-Mailing-List: linux-spi@vger.kernel.org + +This patch fixes a null pointer bug in the spi driver spi-rb4xx.c by +moving the private data initialization to earlier in probe + +Signed-off-by: Christopher Hill <ch6574@gmail.com> +--- + drivers/spi/spi-rb4xx.c | 10 +++++----- + 1 file changed, 5 insertions(+), 5 deletions(-) + +diff --git a/drivers/spi/spi-rb4xx.c b/drivers/spi/spi-rb4xx.c +index 4c9620e0d18c..17e1a77dc132 100644 +--- a/drivers/spi/spi-rb4xx.c ++++ b/drivers/spi/spi-rb4xx.c +@@ -158,6 +158,11 @@ static int rb4xx_spi_probe(struct platform_device *pdev) + master->transfer_one = rb4xx_transfer_one; + master->set_cs = rb4xx_set_cs; + ++ rbspi = spi_master_get_devdata(master); ++ rbspi->base = spi_base; ++ rbspi->clk = ahb_clk; ++ platform_set_drvdata(pdev, rbspi); ++ + err = devm_spi_register_master(&pdev->dev, master); + if (err) { + dev_err(&pdev->dev, "failed to register SPI master\n"); +@@ -168,11 +173,6 @@ static int rb4xx_spi_probe(struct platform_device *pdev) + if (err) + return err; + +- rbspi = spi_master_get_devdata(master); +- rbspi->base = spi_base; +- rbspi->clk = ahb_clk; +- platform_set_drvdata(pdev, rbspi); +- + /* Enable SPI */ + rb4xx_write(rbspi, AR71XX_SPI_REG_FS, AR71XX_SPI_FS_GPIO); + diff --git a/target/linux/generic/backport-5.4/826-v5.8-spi-rb4xx-update-driver-to-be-device-tree-aware.patch b/target/linux/generic/backport-5.4/826-v5.8-spi-rb4xx-update-driver-to-be-device-tree-aware.patch new file mode 100644 index 0000000000..0340c934d8 --- /dev/null +++ b/target/linux/generic/backport-5.4/826-v5.8-spi-rb4xx-update-driver-to-be-device-tree-aware.patch @@ -0,0 +1,62 @@ +From: Christopher Hill <ch6574@gmail.com> +To: Mark Brown <broonie@kernel.org> +Cc: Christopher Hill <ch6574@gmail.com>, linux-spi@vger.kernel.org, + linux-kernel@vger.kernel.org +Subject: [PATCH 2/3] spi: rb4xx: update driver to be device tree aware +Date: Thu, 21 May 2020 14:36:30 -0400 +Message-Id: <20200521183631.37806-2-ch6574@gmail.com> +X-Mailer: git-send-email 2.25.1 +In-Reply-To: <20200521183631.37806-1-ch6574@gmail.com> +References: <20200521183631.37806-1-ch6574@gmail.com> +MIME-Version: 1.0 +Sender: linux-spi-owner@vger.kernel.org +Precedence: bulk +List-ID: <linux-spi.vger.kernel.org> +X-Mailing-List: linux-spi@vger.kernel.org + +This patch updates the spi driver spi-rb4xx.c to be device tree aware + +Signed-off-by: Christopher Hill <ch6574@gmail.com> +--- + drivers/spi/spi-rb4xx.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/drivers/spi/spi-rb4xx.c b/drivers/spi/spi-rb4xx.c +index 17e1a77dc132..8aa51beb4ff3 100644 +--- a/drivers/spi/spi-rb4xx.c ++++ b/drivers/spi/spi-rb4xx.c +@@ -14,6 +14,7 @@ + #include <linux/platform_device.h> + #include <linux/clk.h> + #include <linux/spi/spi.h> ++#include <linux/of.h> + + #include <asm/mach-ath79/ar71xx_regs.h> + +@@ -150,6 +151,7 @@ static int rb4xx_spi_probe(struct platform_device *pdev) + if (IS_ERR(ahb_clk)) + return PTR_ERR(ahb_clk); + ++ master->dev.of_node = pdev->dev.of_node; + master->bus_num = 0; + master->num_chipselect = 3; + master->mode_bits = SPI_TX_DUAL; +@@ -188,11 +190,18 @@ static int rb4xx_spi_remove(struct platform_device *pdev) + return 0; + } + ++static const struct of_device_id rb4xx_spi_dt_match[] = { ++ { .compatible = "mikrotik,rb4xx-spi" }, ++ { }, ++}; ++MODULE_DEVICE_TABLE(of, rb4xx_spi_dt_match); ++ + static struct platform_driver rb4xx_spi_drv = { + .probe = rb4xx_spi_probe, + .remove = rb4xx_spi_remove, + .driver = { + .name = "rb4xx-spi", ++ .of_match_table = of_match_ptr(rb4xx_spi_dt_match), + }, + }; + |