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memory: atmel-sdramc: fix a possible NULL dereference

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of_match_device could return NULL, and so cause a NULL pointer
dereference later.

For fixing this problem, we use of_device_get_match_data(), this will
simplify the code a little by using a standard function for
getting the match data.

Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
LABBE Corentin 2016-08-16 15:53:18 +02:00 committed by Alexandre Belloni
parent ee4fec5f44
commit 7922118f8f
1 changed files with 1 additions and 3 deletions
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4
drivers/memory/atmel-sdramc.c
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@ -53,12 +53,10 @@ static const struct of_device_id atmel_ramc_of_match[] = {
static int atmel_ramc_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct at91_ramc_caps *caps;
struct clk *clk;
match = of_match_device(atmel_ramc_of_match, &pdev->dev);
caps = match->data;
caps = of_device_get_match_data(&pdev->dev);
if (caps->has_ddrck) {
clk = devm_clk_get(&pdev->dev, "ddrck");