5.15-stable review patch. If anyone has any objections, please let me know.
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From: Douglas Anderson dianders@chromium.org
[ Upstream commit bc65cc42af737a5a35f83842408ef2c6c79ba025 ]
If the adapter is unplugged while we're looping in r8153b_ups_en() / r8153c_ups_en() we could end up looping for 10 seconds (20 ms * 500 loops). Add code similar to what's done in other places in the driver to check for unplug and bail.
Signed-off-by: Douglas Anderson dianders@chromium.org Reviewed-by: Grant Grundler grundler@chromium.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/usb/r8152.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 15610d7d677ce..663e3880bf713 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -3648,6 +3648,8 @@ static void r8153b_ups_en(struct r8152 *tp, bool enable) int i;
for (i = 0; i < 500; i++) { + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + return; if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) & AUTOLOAD_DONE) break; @@ -3688,6 +3690,8 @@ static void r8153c_ups_en(struct r8152 *tp, bool enable) int i;
for (i = 0; i < 500; i++) { + if (test_bit(RTL8152_UNPLUG, &tp->flags)) + return; if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) & AUTOLOAD_DONE) break;