Message ID | 20231004122435.v2.3.I6405b1587446c157c6d6263957571f2b11f330a7@changeid |
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State | New |
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Miller" <davem@davemloft.net> Cc: linux-usb@vger.kernel.org, Alan Stern <stern@rowland.harvard.edu>, Grant Grundler <grundler@chromium.org>, Edward Hill <ecgh@chromium.org>, Douglas Anderson <dianders@chromium.org>, =?utf-8?q?Bj=C3=B8rn_Mork?= <bjorn@mork.no>, Eric Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 3/5] r8152: Check for unplug in r8153b_ups_en() / r8153c_ups_en() Date: Wed, 4 Oct 2023 12:24:40 -0700 Message-ID: <20231004122435.v2.3.I6405b1587446c157c6d6263957571f2b11f330a7@changeid> X-Mailer: git-send-email 2.42.0.582.g8ccd20d70d-goog In-Reply-To: <20231004192622.1093964-1-dianders@chromium.org> References: <20231004192622.1093964-1-dianders@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Wed, 04 Oct 2023 12:27:13 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778854274531011058 X-GMAIL-MSGID: 1778854274531011058 |
Series |
r8152: Avoid writing garbage to the adapter's registers
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Commit Message
Doug Anderson
Oct. 4, 2023, 7:24 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>
---
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 --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;