If the ROM status returned is unknown (RENESAS_ROM_STATUS_NO_RESULT)
we need to attempt loading the firmware rather than just skipping
it all together.
Cc: stable@xxxxxxxxxxxxxxx
Cc: Mathias Nyman <mathias.nyman@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Vinod Koul <vkoul@xxxxxxxxxx>
Fixes: 2478be82de44 ("usb: renesas-xhci: Add ROM loader for uPD720201")
Signed-off-by: Moritz Fischer <mdf@xxxxxxxxxx>
---
drivers/usb/host/xhci-pci-renesas.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/host/xhci-pci-renesas.c b/drivers/usb/host/xhci-pci-renesas.c
index f97ac9f52bf4..dfe54f0afc4b 100644
--- a/drivers/usb/host/xhci-pci-renesas.c
+++ b/drivers/usb/host/xhci-pci-renesas.c
@@ -207,7 +207,8 @@ static int renesas_check_rom_state(struct pci_dev *pdev)
return 0;
case RENESAS_ROM_STATUS_NO_RESULT: /* No result yet */
- return 0;
+ dev_dbg(&pdev->dev, "Unknown ROM status ...\n");
+ break;
case RENESAS_ROM_STATUS_ERROR: /* Error State */
default: /* All other states are marked as "Reserved states" */
@@ -224,13 +225,11 @@ static int renesas_fw_check_running(struct pci_dev *pdev)
u8 fw_state;
int err;
- /* Check if device has ROM and loaded, if so skip everything */
- err = renesas_check_rom(pdev);
- if (err) { /* we have rom */
- err = renesas_check_rom_state(pdev);
- if (!err)
- return err;
- }
+ /* Only if device has ROM and loaded FW we can skip loading and
+ * return success. Otherwise (even unknown state), attempt to load FW.
+ */
+ if (renesas_check_rom(pdev) && !renesas_check_rom_state(pdev))
+ return 0;
/*
* Test if the device is actually needing the firmware. As most
--
2.31.1
