Files
erofs-linux/drivers/usb/typec
Sing-Han Chen 825911492e ucsi_ccg: Check DEV_INT bit only when starting CCG4
CCGx clears Bit 0:Device Interrupt in the INTR_REG
if CCGx is reset successfully. However, there might
be a chance that other bits in INTR_REG are not
cleared due to internal data queued in PPM. This case
misleads the driver that CCGx reset failed.

The commit checks bit 0 in INTR_REG and ignores other
bits. The ucsi driver would reset PPM later.

Fixes: 247c554a14 ("usb: typec: ucsi: add support for Cypress CCGx")
Cc: [email protected]
Reviewed-by: Heikki Krogerus <[email protected]>
Signed-off-by: Sing-Han Chen <[email protected]>
Signed-off-by: Wayne Chang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
2022-01-26 13:41:19 +01:00
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