diff mbox series

[v4,3/5] r8152: Check for unplug in r8153b_ups_en() / r8153c_ups_en()

Message ID 20231019142019.v4.3.I6405b1587446c157c6d6263957571f2b11f330a7@changeid
State New
Headers
Series r8152: Avoid writing garbage to the adapter's registers |

Commit Message

Doug Anderson Oct. 19, 2023, 9:20 p.m. UTC 
  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>
---

(no changes since v2)

Changes in v2:
- ("Check for unplug in r8153b_ups_en() / r8153c_ups_en()") new for v2.

 drivers/net/usb/r8152.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index fff2f9e67b5f..888d3884821e 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -3663,6 +3663,8 @@  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;
@@ -3703,6 +3705,8 @@  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;