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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2019-06-13 06:48:34 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-21 16:50:54 -0400 |
| commit | e08efef8fe7db87206314c19b341612c719f891a (patch) | |
| tree | 7c8693fb8b3db66d440103ea631bb93649ec8999 /drivers/media | |
| parent | fc47bf1147ecf55fe51181723dd52cbad53dd02b (diff) | |
| download | lwn-e08efef8fe7db87206314c19b341612c719f891a.tar.gz lwn-e08efef8fe7db87206314c19b341612c719f891a.zip | |
media: s5p-mfc: Make additional clocks optional
Since the beginning the second clock ('special', 'sclk') was optional and
it is not available on some variants of Exynos SoCs (i.e. Exynos5420 with
v7 of MFC hardware).
However commit 1bce6fb3edf1 ("[media] s5p-mfc: Rework clock handling")
made handling of all specified clocks mandatory. This patch restores
original behavior of the driver and fixes its operation on
Exynos5420 SoCs.
Fixes: 1bce6fb3edf1 ("[media] s5p-mfc: Rework clock handling")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_pm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c index 2e62f8721fa5..7d52431c2c83 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_pm.c @@ -34,6 +34,11 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev) for (i = 0; i < pm->num_clocks; i++) { pm->clocks[i] = devm_clk_get(pm->device, pm->clk_names[i]); if (IS_ERR(pm->clocks[i])) { + /* additional clocks are optional */ + if (i && PTR_ERR(pm->clocks[i]) == -ENOENT) { + pm->clocks[i] = NULL; + continue; + } mfc_err("Failed to get clock: %s\n", pm->clk_names[i]); return PTR_ERR(pm->clocks[i]); |