xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: common: usb-conn-gpio: Set last role to unknown before initial detection

Browse Source 
[ Upstream commit edd60d24bd858cef165274e4cd6cab43bdc58d15 ]

Currently if we bootup a device without cable connected, then
usb-conn-gpio won't call set_role() since last_role is same as
current role. This happens because during probe last_role gets
initialised to zero.

To avoid this, added a new constant in enum usb_role, last_role
is set to USB_ROLE_UNKNOWN before performing initial detection.

While at it, also handle default case for the usb_role switch
in cdns3, intel-xhci-usb-role-switch & musb/jz4740 to avoid
build warnings.

Fixes: 4602f3bff2 ("usb: common: add USB GPIO based connection detection driver")
Signed-off-by: Prashanth K <quic_prashk@quicinc.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Message-ID: <1685544074-17337-1-git-send-email-quic_prashk@quicinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Prashanth K
2023-05-31 20:11:14 +05:30
committed by Greg Kroah-Hartman
parent 0e9e127835
commit 7ade555ac5
5 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/linux/usb/role.h
View File

@@ -11,6 +11,7 @@ enum usb_role {
USB_ROLE_NONE,
USB_ROLE_HOST,
USB_ROLE_DEVICE,
USB_ROLE_UNKNOWN,
};
typedef int (*usb_role_switch_set_t)(struct usb_role_switch *sw,