From 403fae78d7388876b96fbe30ccf2cb551c49ae5a Mon Sep 17 00:00:00 2001 From: jidong xiao Date: Fri, 14 Sep 2007 00:08:51 +0800 Subject: [PATCH] USB: fix limited_power setting mistake in hub.c This patch (jx001) fixes a variable assignment mistake in hub driver. limited_power should be set to 0 if the hub is self-powered,and 1 if the hub is bus-powered. However, the effect of the code was exactly opposite to the spec's statement for the Local Power Source field. The spec says, this field is 1 meaning Local power supply lost while this field is 0 indicating Local power supply good.(This statement is very confusing.) So this patch switchs the 0 and 1. Signed-off-by: Jason Xiao Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 691acf2223..481dca641e 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2818,9 +2818,9 @@ static void hub_events(void) clear_hub_feature(hdev, C_HUB_LOCAL_POWER); if (hubstatus & HUB_STATUS_LOCAL_POWER) /* FIXME: Is this always true? */ - hub->limited_power = 0; - else hub->limited_power = 1; + else + hub->limited_power = 0; } if (hubchange & HUB_CHANGE_OVERCURRENT) { dev_dbg (hub_dev, "overcurrent change\n"); -- 2.39.5