From: Tomasz Figa Date: Thu, 30 Jul 2020 23:01:05 +0000 (+0200) Subject: media: exynos4-is: Request syscon only if ISP writeback is present X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=55400d7745ca88d3770e37b695785e18ebe23703;p=linux.git media: exynos4-is: Request syscon only if ISP writeback is present On FIMC variants which don't have writeback channel, there is no need to access system registers. This patch makes the driver request sysreg regmap conditionally depending on whether writeback is supported. Signed-off-by: Tomasz Figa Signed-off-by: Jonathan Bakker Reviewed-by: Tomasz Figa Reviewed-by: Sylwester Nawrocki Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/exynos4-is/fimc-core.c b/drivers/media/platform/exynos4-is/fimc-core.c index 2258f3bfc929e..08d1f39a914c5 100644 --- a/drivers/media/platform/exynos4-is/fimc-core.c +++ b/drivers/media/platform/exynos4-is/fimc-core.c @@ -954,9 +954,11 @@ static int fimc_probe(struct platform_device *pdev) spin_lock_init(&fimc->slock); mutex_init(&fimc->lock); - fimc->sysreg = fimc_get_sysreg_regmap(dev->of_node); - if (IS_ERR(fimc->sysreg)) - return PTR_ERR(fimc->sysreg); + if (fimc->variant->has_isp_wb) { + fimc->sysreg = fimc_get_sysreg_regmap(dev->of_node); + if (IS_ERR(fimc->sysreg)) + return PTR_ERR(fimc->sysreg); + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); fimc->regs = devm_ioremap_resource(dev, res);