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usb: host: fix incorrect updating of offset

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The variable temp is incorrectly being updated, instead it should
be offset otherwise the loop just reads the same capability value
and loops forever.  Thanks to Alan Stern for pointing out the
correct fix to my original fix.  Fix also cleans up clang warning:

drivers/usb/host/ehci-dbg.c:840:4: warning: Value stored to 'temp'
is never read

Fixes: d49d431744 ("USB: misc ehci updates")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Ian King 2017-11-07 16:45:04 +00:00 committed by Greg Kroah-Hartman
parent 33c309ebc7
commit 1d5a31582e
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/ehci-dbg.c
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@ -827,7 +827,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
default: /* unknown */
break;
}
temp = (cap >> 8) & 0xff;
offset = (cap >> 8) & 0xff;
}
}
#endif