diff options
| author | Amitkumar Karwar <amit.karwar@redpinesignals.com> | 2018-03-20 16:40:40 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-03-27 11:53:51 +0300 |
| commit | 90b12aebe54b9157a28f5131203f48ad943ba79a (patch) | |
| tree | 6e7445cb43821b29fa72244892160ed9e91f1a06 /drivers/net/wireless | |
| parent | a31f9314114cc884b9979c16b6e147e37ac729d6 (diff) | |
| download | linux-90b12aebe54b9157a28f5131203f48ad943ba79a.tar.xz | |
rsi: fix error path handling in SDIO probe
We miss to release IRQ in certain error path in SDIO probe which
causes following kernel panic. This patch corrects error path
handling
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: (null)
PGD 0 P4D 0
Oops: 0010 [#1] SMP PTI
Call Trace:
<IRQ>
? call_timer_fn+0x29/0x120
? run_timer_softirq+0x1da/0x420
? timer_interrupt+0x11/0x20
? __do_softirq+0xef/0x26e
? irq_exit+0xbe/0xd0
? do_IRQ+0x4a/0xc0
? common_interrupt+0xa2/0xa2
</IRQ>
? cpuidle_enter_state+0x118/0x250
? do_idle+0x186/0x1e0
? cpu_startup_entry+0x6f/0x80
? start_kernel+0x47c/0x49c
? secondary_startup_64+0xa5/0xb0
Fixes: 50117605770c ("rsi: improve RX handling in SDIO interface")
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_sdio.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c index 13705fca59dd..9ce2edb77cc0 100644 --- a/drivers/net/wireless/rsi/rsi_91x_sdio.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c @@ -967,7 +967,7 @@ static int rsi_probe(struct sdio_func *pfunction, rsi_sdio_rx_thread, "SDIO-RX-Thread"); if (status) { rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__); - goto fail_free_adapter; + goto fail_kill_thread; } skb_queue_head_init(&sdev->rx_q.head); sdev->rx_q.num_rx_pkts = 0; @@ -977,7 +977,7 @@ static int rsi_probe(struct sdio_func *pfunction, rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__); sdio_release_host(pfunction); status = -EIO; - goto fail_kill_thread; + goto fail_claim_irq; } sdio_release_host(pfunction); rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__); @@ -985,7 +985,7 @@ static int rsi_probe(struct sdio_func *pfunction, if (rsi_hal_device_init(adapter)) { rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__); status = -EINVAL; - goto fail_kill_thread; + goto fail_dev_init; } rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n"); @@ -1002,10 +1002,13 @@ static int rsi_probe(struct sdio_func *pfunction, fail_dev_init: sdio_claim_host(pfunction); sdio_release_irq(pfunction); - sdio_disable_func(pfunction); sdio_release_host(pfunction); -fail_kill_thread: +fail_claim_irq: rsi_kill_thread(&sdev->rx_thread); +fail_kill_thread: + sdio_claim_host(pfunction); + sdio_disable_func(pfunction); + sdio_release_host(pfunction); fail_free_adapter: rsi_91x_deinit(adapter); rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__); |