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serial: sprd: check for NULL after calling devm_clk_get

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In platforms which does not use CLK framework (HAVE_CLK not set), the
clk_* functions return NULL instead of an error. This patch handles that
scenario.

Signed-off-by: Fernando Guzman Lugo <fernando.guzman.lugo@intel.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fernando Guzman Lugo 2015-06-11 10:39:46 +08:00 committed by Greg Kroah-Hartman
parent 899f0c1c7d
commit ff0daa1c1a
1 changed files with 1 additions and 1 deletions
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drivers/tty/serial/sprd_serial.c
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@ -716,7 +716,7 @@ static int sprd_probe(struct platform_device *pdev)
up->flags = UPF_BOOT_AUTOCONF;
clk = devm_clk_get(&pdev->dev, NULL);
if (!IS_ERR(clk))
if (!IS_ERR_OR_NULL(clk))
up->uartclk = clk_get_rate(clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);