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clk: hisi: refine parameter checking for init

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*of_iomap()* will check the device node pointer, and if the pointer is
NULL it will return error code. So refine clock's init flow by checking
the device node with this simple way; and polish a little for the print
out message.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Leo Yan 2015-08-03 09:13:34 +08:00 committed by Stephen Boyd
parent 3294bee870
commit 1fb6dd9da6
1 changed files with 3 additions and 8 deletions
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11
drivers/clk/hisilicon/clk.c
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@ -44,14 +44,9 @@ struct hisi_clock_data __init *hisi_clk_init(struct device_node *np,
struct clk **clk_table;
void __iomem *base;
if (np) {
base = of_iomap(np, 0);
if (!base) {
pr_err("failed to map Hisilicon clock registers\n");
goto err;
}
} else {
pr_err("failed to find Hisilicon clock node in DTS\n");
base = of_iomap(np, 0);
if (!base) {
pr_err("%s: failed to map clock registers\n", __func__);
goto err;
}