A while ago I provided a patch that fixed device detection after device removal.
(USB: sl811-hcd: Fix device disconnect)
Chris Brissette pointed out that the detection/removal counter method
to distinguish insert or remove my fail under certain conditions.
Latest SL811HS datasheet (Document 38-08008 Rev. *D) indicates that
bit 6 (SL11H_INTMASK_RD) of the Interrupt Status Register together with
bit 5 (SL11H_INTMASK_INSRMV) can be used to determine whether a device has
been inserted or removed.
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
drivers/usb/host/sl811-hcd.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 5b22a4d..30f4185 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -719,10 +719,11 @@ retry:
/* port status seems weird until after reset, so
* force the reset and make khubd clean up later.
*/
- if (sl811->stat_insrmv & 1)
- sl811->port1 |= 1 << USB_PORT_FEAT_CONNECTION;
- else
+ if (irqstat & SL11H_INTMASK_RD)
+
sl811->port1 &= ~(1 << USB_PORT_FEAT_CONNECTION);
+ else
+ sl811->port1 |= 1 << USB_PORT_FEAT_CONNECTION;
sl811->port1 |= 1 << USB_PORT_FEAT_C_CONNECTION;
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