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authorAlan Stern <stern@rowland.harvard.edu>2009-02-25 00:19:47 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-02-28 01:40:50 +0300
commitce459ec1d278b19be8e0719dbfd47dd1d6687bfb (patch)
treec9e32a817372e53656f45aefe9470ce1c329e681
parent5126a2674ddac0804450f59da25a058cca629d38 (diff)
downloadlinux-ce459ec1d278b19be8e0719dbfd47dd1d6687bfb.tar.xz
USB: g_file_storage: automatically disable stalls under Atmel
This patch (as1220) automatically disables stalls when g_file_storage finds itself running with an Atmel device controller, because the Atmel hardware/driver isn't capable of halting bulk endpoints correctly. Reported-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/gadget/file_storage.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index b10fa31cc915..1ab9dac7e12d 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -3879,7 +3879,11 @@ static int __init check_parameters(struct fsg_dev *fsg)
mod_data.protocol_type = USB_SC_SCSI;
mod_data.protocol_name = "Transparent SCSI";
- if (gadget_is_sh(fsg->gadget))
+ /* Some peripheral controllers are known not to be able to
+ * halt bulk endpoints correctly. If one of them is present,
+ * disable stalls.
+ */
+ if (gadget_is_sh(fsg->gadget) || gadget_is_at91(fsg->gadget))
mod_data.can_stall = 0;
if (mod_data.release == 0xffff) { // Parameter wasn't set