Hello.
Ben Dooks wrote:
From: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
This patch modifies the following in S3C hsotg driver.
1. Gets a reference to the USB OTG hclk clock and enables it. This is
required for plaforms on which the USB OTG hclk is disabled during
the boot time clock intialization.
2. Add necessary clock clean up in case of error during initialization
failure or during module unload.
3. Add a new field 'clk_otg' in 'struct s3c_hsotg' to maintain a
reference to the USB OTG hclk clock.
Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
---
drivers/usb/gadget/s3c-hsotg.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 81c47d2..526d081 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
[...]
@@ -3269,6 +3271,14 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev)
goto err_regs_res;
}
+ hsotg->clk_otg = clk_get(&pdev->dev, "otg");
+ if (IS_ERR(hsotg->clk_otg)) {
+ dev_err(dev, "failed to find usb otg clock source\n");
+ ret = -ENODEV;
hmm, -ENODEV isn't really the right error to return here, it'll
get silently ignored by the device core.
Right, PTR_ERR(hsotg->clk_otg) should be returned in this case.
WBR, Sergei
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