diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-08-28 01:34:50 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-28 22:48:37 +0200 |
| commit | 1902a01e2bcc3abd7c9a18dc05e78c7ab4a53c54 (patch) | |
| tree | 8c7bec155890adb0da32c8c74826bcc2e5b9f54f /drivers/usb/storage/realtek_cr.c | |
| parent | f6445b6b2f2bb1745080af4a0926049e8bca2617 (diff) | |
| download | linux-1902a01e2bcc3abd7c9a18dc05e78c7ab4a53c54.tar.gz | |
USB: storage: ums-realtek: Whitelist auto-delink support
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@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20190827173450.13572-2-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/storage/realtek_cr.c')
| -rw-r--r-- | drivers/usb/storage/realtek_cr.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c index beaffac805af20..1d9ce9cbc831d1 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) |