diff options
| author | Qi Zhou <atmgnd@outlook.com> | 2020-01-04 11:02:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-12 12:21:52 +0100 |
| commit | 7cbdf96cda1fbffb17ec26ea65e1fe63c9aed430 (patch) | |
| tree | 29a598404ff645281b5660aa941ac9d3e1bdb6ec | |
| parent | 093d658a06cd1831c629ceeee207572895c1a872 (diff) | |
usb: missing parentheses in USE_NEW_SCHEME
commit 1530f6f5f5806b2abbf2a9276c0db313ae9a0e09 upstream.
According to bd0e6c9614b9 ("usb: hub: try old enumeration scheme first
for high speed devices") the kernel will try the old enumeration scheme
first for high speed devices. This can happen when a high speed device
is plugged in.
But due to missing parentheses in the USE_NEW_SCHEME define, this logic
can get messed up and the incorrect result happens.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Qi Zhou <atmgnd@outlook.com>
Link: https://lore.kernel.org/r/ht4mtag8ZP-HKEhD0KkJhcFnVlOFV8N8eNjJVRD9pDkkLUNhmEo8_cL_sl7xy9mdajdH-T8J3TFQsjvoYQT61NFjQXy469Ed_BbBw_x4S1E=@protonmail.com
[ fixup changelog text - gregkh]
Cc: stable <stable@vger.kernel.org>
Fixes: bd0e6c9614b9 ("usb: hub: try old enumeration scheme first for high speed devices")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/core/hub.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index dfe9ac8d2375..8b23162e4239 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2691,7 +2691,7 @@ static unsigned hub_is_wusb(struct usb_hub *hub) #define SET_ADDRESS_TRIES 2 #define GET_DESCRIPTOR_TRIES 2 #define SET_CONFIG_TRIES (2 * (use_both_schemes + 1)) -#define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)scheme) +#define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme)) #define HUB_ROOT_RESET_TIME 60 /* times are in msec */ #define HUB_SHORT_RESET_TIME 10 |