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FROMGIT: usb: typec: intel_pmc_mux: Use correct response message bits

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When Intel PMC Mux agent driver receives the response message from PMC, it
checks for the same response bits for all the mux states.
Corrected it by checking correct response message bits, Bit 8 & 9 for the
SAFE Mode and Alternate Modes and Bit 16 & 17 for the Connect and
Disconnect Modes.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Link: https://lore.kernel.org/r/20201203220813.16281-1-utkarsh.h.patel@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 3a288efb08 usb-next)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ifc0f715f566917b8e900d2843658db24b514d372
This commit is contained in:
Utkarsh Patel
2020-12-03 14:08:13 -08:00
committed by Greg Kroah-Hartman
parent ca0c76873c
commit 48cdd553e2
1 changed files with 7 additions and 2 deletions
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9
drivers/usb/typec/mux/intel_pmc_mux.c
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@@ -176,6 +176,7 @@ static int hsl_orientation(struct pmc_usb_port *port)
static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len)
{
u8 response[4];
u8 status_res;
int ret;
/*
@@ -189,9 +190,13 @@ static int pmc_usb_command(struct pmc_usb_port *port, u8 *msg, u32 len)
if (ret)
return ret;
if (response[2] & PMC_USB_RESP_STATUS_FAILURE) {
if (response[2] & PMC_USB_RESP_STATUS_FATAL)
status_res = (msg[0] & 0xf) < PMC_USB_SAFE_MODE ?
response[2] : response[1];
if (status_res & PMC_USB_RESP_STATUS_FAILURE) {
if (status_res & PMC_USB_RESP_STATUS_FATAL)
return -EIO;
return -EBUSY;
}