On Wed, 28 Aug 2019, Kai-Heng Feng wrote: > 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.feng@xxxxxxxxxxxxx> > --- > 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) For both patches in this series: Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Shouldn't this patch go into the -stable kernels as well? Alan Stern
