Auto-delink requires writing special registers to ums-realtek devices. Unconditionally enable auto-delink may break newer devices.
So only enable auto-delink by default for the original three IDs, 0x0138, 0x0158 and 0x0159. Realtek is working on a patch to properly support auto-delink for other IDs. BugLink: https://bugs.launchpad.net/bugs/1838886 Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com> --- v3: - Whitelisting instead of adding new module parameter. v2: - Use auto_delink_support instead of auto_delink_enable. drivers/usb/storage/realtek_cr.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index beaffac805af..1d9ce9cbc831 100644 --- a/drivers/usb/storage/realtek_cr.c +++ b/drivers/usb/storage/realtek_cr.c @@ -996,12 +996,15 @@ static int init_realtek_cr(struct us_data *us) goto INIT_FAIL; } - if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) || - CHECK_FW_VER(chip, 0x5901)) - SET_AUTO_DELINK(chip); - if (STATUS_LEN(chip) == 16) { - if (SUPPORT_AUTO_DELINK(chip)) + if (CHECK_PID(chip, 0x0138) || CHECK_PID(chip, 0x0158) || + CHECK_PID(chip, 0x0159)) { + if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) || + CHECK_FW_VER(chip, 0x5901)) SET_AUTO_DELINK(chip); + if (STATUS_LEN(chip) == 16) { + if (SUPPORT_AUTO_DELINK(chip)) + SET_AUTO_DELINK(chip); + } } #ifdef CONFIG_REALTEK_AUTOPM if (ss_en) -- 2.17.1
