Messages in this thread Patch in this message | | | From | Mark Brown <> | Subject | Applied "regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF" to the regulator tree | Date | Mon, 23 Sep 2019 22:23:05 +0100 (BST) |
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The patch
regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF
has been applied to the regulator tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-5.4
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 1d6db22ff7d67a17c571543c69c63b1d261249b0 Mon Sep 17 00:00:00 2001 From: Axel Lin <axel.lin@ingics.com> Date: Sun, 22 Sep 2019 10:29:28 +0800 Subject: [PATCH] regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF
Use of_device_get_match_data which has NULL test for match before dereference match->data. Add NULL test for drvtype so it still works for fixed_voltage_ops when !CONFIG_OF.
Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Philippe Schenker <philippe.schenker@toradex.com> Link: https://lore.kernel.org/r/20190922022928.28355-1-axel.lin@ingics.com Signed-off-by: Mark Brown <broonie@kernel.org> --- drivers/regulator/fixed.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c index d90a6fd8cbc7..f81533070058 100644 --- a/drivers/regulator/fixed.c +++ b/drivers/regulator/fixed.c @@ -144,8 +144,7 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct fixed_voltage_config *config; struct fixed_voltage_data *drvdata; - const struct fixed_dev_type *drvtype = - of_match_device(dev->driver->of_match_table, dev)->data; + const struct fixed_dev_type *drvtype = of_device_get_match_data(dev); struct regulator_config cfg = { }; enum gpiod_flags gflags; int ret; @@ -177,7 +176,7 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev) drvdata->desc.type = REGULATOR_VOLTAGE; drvdata->desc.owner = THIS_MODULE; - if (drvtype->has_enable_clock) { + if (drvtype && drvtype->has_enable_clock) { drvdata->desc.ops = &fixed_voltage_clkenabled_ops; drvdata->enable_clock = devm_clk_get(dev, NULL); -- 2.20.1
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