| Message ID | 20140909131036.7265121f.m.chehab@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 09/09/14 18:10, Mauro Carvalho Chehab wrote: > ERROR: "__bad_ndelay" [drivers/media/platform/s5p-jpeg/s5p-jpeg.ko] undefined! > > That happens because asm-generic doesn't like any ndelay time > bigger than 20us. > > Currently, usleep_range() couldn't simply be used, since > exynos4_jpeg_sw_reset() is called with a spinlock held. > > So, let's use ndelay() instead. > > Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> > Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> -- Thanks, Sylwester
On Tue, Sep 9, 2014 at 1:10 PM, Mauro Carvalho Chehab <m.chehab@samsung.com> wrote: > ERROR: "__bad_ndelay" [drivers/media/platform/s5p-jpeg/s5p-jpeg.ko] undefined! > > That happens because asm-generic doesn't like any ndelay time > bigger than 20us. > > Currently, usleep_range() couldn't simply be used, since > exynos4_jpeg_sw_reset() is called with a spinlock held. > > So, let's use ndelay() instead. You meant 'udelay() instead'.
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c index e51c078360f5..ab6d6f43c96f 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c @@ -23,7 +23,7 @@ void exynos4_jpeg_sw_reset(void __iomem *base) reg = readl(base + EXYNOS4_JPEG_CNTL_REG); writel(reg & ~EXYNOS4_SOFT_RESET_HI, base + EXYNOS4_JPEG_CNTL_REG); - ndelay(100000); + udelay(100); writel(reg | EXYNOS4_SOFT_RESET_HI, base + EXYNOS4_JPEG_CNTL_REG); }
ERROR: "__bad_ndelay" [drivers/media/platform/s5p-jpeg/s5p-jpeg.ko] undefined! That happens because asm-generic doesn't like any ndelay time bigger than 20us. Currently, usleep_range() couldn't simply be used, since exynos4_jpeg_sw_reset() is called with a spinlock held. So, let's use ndelay() instead. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>