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gpio: eic-sprd: break loop when getting NULL device resource 

[ Upstream commit 263ade7166 ]

EIC controller have unfixed numbers of banks on different Spreadtrum SoCs,
and each bank has its own base address, the loop of getting there base
address in driver should break if the resource gotten via
platform_get_resource() is NULL already. The later ones would be all NULL
even if the loop continues.

Fixes: 25518e024e ("gpio: Add Spreadtrum EIC driver support")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lore.kernel.org/r/20201209055106.840100-1-zhang.lyra@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Chunyan Zhang 2020-12-09 13:51:06 +08:00 committed by Greg Kroah-Hartman
parent 2ebb2df149
commit 0a652b181d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpio-eic-sprd.c
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@ -598,7 +598,7 @@ static int sprd_eic_probe(struct platform_device *pdev)
*/
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (!res)
continue;
break;
sprd_eic->base[i] = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(sprd_eic->base[i]))