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Subject[PATCH 72/81] Revert "USB: Handle warm reset failure on empty port."
Date
3.5.7.6 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>

This reverts commit ff88c5021f17139d961478e40372f6bb028321bc, which is a
cherry-pick of commit 65bdac5effd15d6af619b3b7218627ef4d84ed6a upstream.

As discussed on a recent thread on stable/lkml/etc. ("[regression]
external HDD in USB3 enclosure cannot be dynamically removed"), this
changed caused issues, and shall be reapplied later with the proper
fixes, once they go into Linus tree.

Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
drivers/usb/core/hub.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index c9590c6..1e8b3bd 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2488,11 +2488,6 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
return 0;
}
} else {
- if (!(portstatus & USB_PORT_STAT_CONNECTION) ||
- hub_port_warm_reset_required(hub,
- portstatus))
- return -ENOTCONN;
-
return 0;
}

@@ -4537,14 +4532,9 @@ static void hub_events(void)
* SS.Inactive state.
*/
if (hub_port_warm_reset_required(hub, portstatus)) {
- int status;
-
dev_dbg(hub_dev, "warm reset port %d\n", i);
- status = hub_port_reset(hub, i, NULL,
+ hub_port_reset(hub, i, NULL,
HUB_BH_RESET_TIME, true);
- if (status < 0)
- hub_port_disable(hub, i, 1);
- connect_change = 0;
}

if (connect_change)
--
1.7.9.5


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