From: Mael GUERIN Date: Wed, 6 Aug 2025 16:44:03 +0000 (+0200) Subject: USB: storage: Add unusual-devs entry for Novatek NTK96550-based camera X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6ca8af3c8fb584f3424a827f554ff74f898c27cd;p=users%2Fjedix%2Flinux-maple.git USB: storage: Add unusual-devs entry for Novatek NTK96550-based camera Add the US_FL_BULK_IGNORE_TAG quirk for Novatek NTK96550-based camera to fix USB resets after sending SCSI vendor commands due to CBW and CSW tags difference, leading to undesired slowness while communicating with the device. Please find below the copy of /sys/kernel/debug/usb/devices with my device plugged in (listed as TechSys USB mass storage here, the underlying chipset being the Novatek NTK96550-based camera): T: Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=0603 ProdID=8611 Rev= 0.01 S: Manufacturer=TechSys S: Product=USB Mass Storage S: SerialNumber=966110000000100 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms Signed-off-by: Mael GUERIN Cc: stable Acked-by: Alan Stern Link: https://lore.kernel.org/r/20250806164406.43450-1-mael.guerin@murena.io Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 54f0b1c83317c..bee9f1e8003d4 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -934,6 +934,13 @@ UNUSUAL_DEV( 0x05e3, 0x0723, 0x9451, 0x9451, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_SANE_SENSE ), +/* Added by Maël GUERIN */ +UNUSUAL_DEV( 0x0603, 0x8611, 0x0000, 0xffff, + "Novatek", + "NTK96550-based camera", + USB_SC_SCSI, USB_PR_BULK, NULL, + US_FL_BULK_IGNORE_TAG ), + /* * Reported by Hanno Boeck * Taken from the Lycoris Kernel