Gitweb: http://git.kernel.org/linus/eb661bc88252e5c6dc69df732e77e42981dd4d8b
Commit: eb661bc88252e5c6dc69df732e77e42981dd4d8b
Parent: ec3815c3e14dc68d49428e6505ae99e86e5dd067
Author: Hennerich, Michael <Michael.Hennerich@analog.com>
AuthorDate: Wed Sep 2 09:26:21 2009 +0100
Committer: Greg Kroah-Hartman <gregkh@suse.de>
CommitDate: Wed Sep 23 06:46:16 2009 -0700
USB: sl811-hcd: Fix device disconnect:
SL811 Device detected after removal used to be working in linux-2.6.22
but then broke somewhere between 2.6.22 and 2.6.28. Current
hub_port_connect_change() in drivers/usb/core/hub.c won't call
usb_disconnect() in case the SL811 driver sets portstatus
USB_PORT_FEAT_CONNECTION upon removal.
AFAIK the SL811 has only a combined Device Insert/Remove
detection bit, therefore use a count to distinguish insert or remove.
Signed-Off-By: Michael Hennerich <hennerich@blackfin.uclinux.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/host/sl811-hcd.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index a949259..5b22a4d 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -719,8 +719,12 @@ retry:
/* port status seems weird until after reset, so
* force the reset and make khubd clean up later.
*/
- sl811->port1 |= (1 << USB_PORT_FEAT_C_CONNECTION)
- | (1 << USB_PORT_FEAT_CONNECTION);
+ if (sl811->stat_insrmv & 1)
+ sl811->port1 |= 1 << USB_PORT_FEAT_CONNECTION;
+ else
+ sl811->port1 &= ~(1 << USB_PORT_FEAT_CONNECTION);
+
+ sl811->port1 |= 1 << USB_PORT_FEAT_C_CONNECTION;
} else if (irqstat & SL11H_INTMASK_RD) {
if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) {
--
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