Message ID | 20190325161944.8044-1-marcel@ziswiler.com |
---|---|
State | Changes Requested |
Delegated to: | Lukasz Majewski |
Headers | show |
Series | [U-Boot,RESEND,RFC,v1] MLK-12883 usb: limit USB_MAX_XFER_BLK to 256 | expand |
There is a typo in the comment: USB Massstorage Also regarding refering to a specific commit ("(cherry picked from commit df0052575b2bc9d66ae73584768e1a457ed5d914)" line): > If you want to refer to a specific commit, don’t just refer to the SHA-1 ID of the commit. > Please also include the oneline summary of the commit, to make it easier for reviewers to know what it is about. Example: > Commit e21d2170f36602ae2708 ("video: remove unnecessary platform_set_drvdata()") [1]: https://www.kernel.org/doc/html/v5.1-rc2/process/submitting-patches.html On Mon, Mar 25, 2019 at 6:20 PM Marcel Ziswiler <marcel@ziswiler.com> wrote: > > From: Peng Fan <peng.fan@nxp.com> > > For Some USB mass storage devices, such as: > " > - Kingston DataTraveler 2.0 001D7D06CF09B04199C7B3EA > - Class: (from Interface) Mass Storage > - PacketSize: 64 Configurations: 1 > - Vendor: 0x0930 Product 0x6545 Version 1.16 > " > When `usb read 0x80000000 0 0x2000`, we met > "EHCI timed out on TD - token=0x80008d80". > > The devices does not support scsi VPD page, we are not able > to get the maximum transfer length for READ(10)/WRITE(10). > > So we limit this to 256 blocks as READ(6). > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> > (cherry picked from commit df0052575b2bc9d66ae73584768e1a457ed5d914) > > --- > This comes from NXP's downstream and has proven to tremendously improve > the situation with those odd USB mass storage aka memory sticks. This is > why I post it here asking whether or not this may be something > benefiting more people. Any feedback and suggestions are welcome. > > common/usb_storage.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/common/usb_storage.c b/common/usb_storage.c > index 8c889bb1a6..7420438363 100644 > --- a/common/usb_storage.c > +++ b/common/usb_storage.c > @@ -949,7 +949,11 @@ static void usb_stor_set_max_xfer_blk(struct usb_device *udev, > * there is enough free heap space left, but the SCSI READ(10) and > * WRITE(10) commands are limited to 65535 blocks. > */ > - blk = USHRT_MAX; > + /* > + * Some USB Massstorage devices have issues, limiting this to 256 > + * fixes this. > + */ > + blk = 256; > #else > blk = 20; > #endif > -- > 2.20.1 > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > https://lists.denx.de/listinfo/u-boot
On Thu, 2019-03-28 at 14:38 +0000, Igor Opaniuk wrote: > There is a typo in the comment: USB Massstorage I believe it is just everywhere called USB mass storage really. > Also regarding refering to a specific commit ("(cherry picked from > commit df0052575b2bc9d66ae73584768e1a457ed5d914)" line): That is really just git's default cherry pick message as added by its -x command line argument. None of my doing really. > > If you want to refer to a specific commit, don’t just refer to the > > SHA-1 ID of the commit. > > Please also include the oneline summary of the commit, to make it > > easier for reviewers to know what it is about. Example: > > Commit e21d2170f36602ae2708 ("video: remove unnecessary > > platform_set_drvdata()") I am fully aware of this, however, I believe usually the hash would be shortened to just 12 characters. > [1]: > https://www.kernel.org/doc/html/v5.1-rc2/process/submitting-patches.html > > On Mon, Mar 25, 2019 at 6:20 PM Marcel Ziswiler <marcel@ziswiler.com> > wrote: > > From: Peng Fan <peng.fan@nxp.com> > > > > For Some USB mass storage devices, such as: > > " > > - Kingston DataTraveler 2.0 001D7D06CF09B04199C7B3EA > > - Class: (from Interface) Mass Storage > > - PacketSize: 64 Configurations: 1 > > - Vendor: 0x0930 Product 0x6545 Version 1.16 > > " > > When `usb read 0x80000000 0 0x2000`, we met > > "EHCI timed out on TD - token=0x80008d80". > > > > The devices does not support scsi VPD page, we are not able > > to get the maximum transfer length for READ(10)/WRITE(10). > > > > So we limit this to 256 blocks as READ(6). > > > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > > Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> > > (cherry picked from commit > > df0052575b2bc9d66ae73584768e1a457ed5d914) > > > > --- > > This comes from NXP's downstream and has proven to tremendously > > improve > > the situation with those odd USB mass storage aka memory sticks. > > This is > > why I post it here asking whether or not this may be something > > benefiting more people. Any feedback and suggestions are welcome. > > > > common/usb_storage.c | 6 +++++- > > 1 file changed, 5 insertions(+), 1 deletion(-) > > > > diff --git a/common/usb_storage.c b/common/usb_storage.c > > index 8c889bb1a6..7420438363 100644 > > --- a/common/usb_storage.c > > +++ b/common/usb_storage.c > > @@ -949,7 +949,11 @@ static void usb_stor_set_max_xfer_blk(struct > > usb_device *udev, > > * there is enough free heap space left, but the SCSI > > READ(10) and > > * WRITE(10) commands are limited to 65535 blocks. > > */ > > - blk = USHRT_MAX; > > + /* > > + * Some USB Massstorage devices have issues, limiting this > > to 256 > > + * fixes this. > > + */ > > + blk = 256; > > #else > > blk = 20; > > #endif > > -- > > 2.20.1 > > > > _______________________________________________ > > U-Boot mailing list > > U-Boot@lists.denx.de > > https://lists.denx.de/listinfo/u-boot
diff --git a/common/usb_storage.c b/common/usb_storage.c index 8c889bb1a6..7420438363 100644 --- a/common/usb_storage.c +++ b/common/usb_storage.c @@ -949,7 +949,11 @@ static void usb_stor_set_max_xfer_blk(struct usb_device *udev, * there is enough free heap space left, but the SCSI READ(10) and * WRITE(10) commands are limited to 65535 blocks. */ - blk = USHRT_MAX; + /* + * Some USB Massstorage devices have issues, limiting this to 256 + * fixes this. + */ + blk = 256; #else blk = 20; #endif