Patch "r8152: Add RTL8152_INACCESSIBLE checks to more loops" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    r8152: Add RTL8152_INACCESSIBLE checks to more loops

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     r8152-add-rtl8152_inaccessible-checks-to-more-loops.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit c6a6f6b702a76466fe045e41e4c0032a0811295b
Author: Douglas Anderson <dianders@xxxxxxxxxxxx>
Date:   Wed Nov 29 13:25:21 2023 -0800

    r8152: Add RTL8152_INACCESSIBLE checks to more loops
    
    [ Upstream commit 32a574c7e2685aa8138754d4d755f9246cc6bd48 ]
    
    Previous commits added checks for RTL8152_INACCESSIBLE in the loops in
    the driver. There are still a few more that keep tripping the driver
    up in error cases and make things take longer than they should. Add
    those in.
    
    All the loops that are part of this commit existed in some form or
    another since the r8152 driver was first introduced, though
    RTL8152_INACCESSIBLE was known as RTL8152_UNPLUG before commit
    715f67f33af4 ("r8152: Rename RTL8152_UNPLUG to RTL8152_INACCESSIBLE")
    
    Fixes: ac718b69301c ("net/usb: new driver for RTL8152")
    Reviewed-by: Grant Grundler <grundler@xxxxxxxxxxxx>
    Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
    Acked-by: Hayes Wang <hayeswang@xxxxxxxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 7a353409928a6..1bb304857a744 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2850,6 +2850,8 @@ static void rtl8152_nic_reset(struct r8152 *tp)
 		ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, CR_RST);
 
 		for (i = 0; i < 1000; i++) {
+			if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
+				break;
 			if (!(ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR) & CR_RST))
 				break;
 			usleep_range(100, 400);
@@ -3179,6 +3181,8 @@ static void rtl_disable(struct r8152 *tp)
 	rxdy_gated_en(tp, true);
 
 	for (i = 0; i < 1000; i++) {
+		if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
+			break;
 		ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
 		if ((ocp_data & FIFO_EMPTY) == FIFO_EMPTY)
 			break;
@@ -3186,6 +3190,8 @@ static void rtl_disable(struct r8152 *tp)
 	}
 
 	for (i = 0; i < 1000; i++) {
+		if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
+			break;
 		if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0) & TCR0_TX_EMPTY)
 			break;
 		usleep_range(1000, 2000);
@@ -5374,6 +5380,8 @@ static void wait_oob_link_list_ready(struct r8152 *tp)
 	int i;
 
 	for (i = 0; i < 1000; i++) {
+		if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
+			break;
 		ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
 		if (ocp_data & LINK_LIST_READY)
 			break;