linux-stable.git/drivers/net, branch v4.19.71

mt76: mt76x0u: do not reset radio on resume

2019-09-06T08:22:23+00:00

commit 8f2d163cb26da87e7d8e1677368b8ba1ba4d30b3 upstream.

On some machines mt76x0u firmware can hung during resume,
what result on messages like below:

[  475.480062] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  475.990066] mt76x0 1-8:1.0: Error: send MCU cmd failed:-110
[  475.990075] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  476.500003] mt76x0 1-8:1.0: Error: send MCU cmd failed:-110
[  476.500012] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  477.010046] mt76x0 1-8:1.0: Error: send MCU cmd failed:-110
[  477.010055] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  477.529997] mt76x0 1-8:1.0: Error: send MCU cmd failed:-110
[  477.530006] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  477.824907] mt76x0 1-8:1.0: Error: send MCU cmd failed:-71
[  477.824916] mt76x0 1-8:1.0: Error: MCU response pre-completed!
[  477.825029] usb 1-8: USB disconnect, device number 6

and possible whole system freeze.

This can be avoided, if we do not perform mt76x0_chip_onoff() reset.

Cc: stable@vger.kernel.org
Fixes: 134b2d0d1fcf ("mt76x0: init files")
Signed-off-by: Stanislaw Gruszka 
Signed-off-by: Kalle Valo 
Signed-off-by: Sasha Levin

net: hisilicon: Fix dma_map_single failed on arm64

2019-08-29T06:28:44+00:00

[ Upstream commit 96a50c0d907ac8f5c3d6b051031a19eb8a2b53e3 ]

On the arm64 platform, executing "ifconfig eth0 up" will fail,
returning "ifconfig: SIOCSIFFLAGS: Input/output error."

ndev->dev is not initialized, dma_map_single->get_dma_ops->
dummy_dma_ops->__dummy_map_page will return DMA_ERROR_CODE
directly, so when we use dma_map_single, the first parameter
is to use the device of platform_device.

Signed-off-by: Jiangfeng Xiao 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: hisilicon: fix hip04-xmit never return TX_BUSY

2019-08-29T06:28:44+00:00

[ Upstream commit f2243b82785942be519016067ee6c55a063bbfe2 ]

TX_DESC_NUM is 256, in tx_count, the maximum value of
mod(TX_DESC_NUM - 1) is 254, the variable "count" in
the hip04_mac_start_xmit function is never equal to
(TX_DESC_NUM - 1), so hip04_mac_start_xmit never
return NETDEV_TX_BUSY.

tx_count is modified to mod(TX_DESC_NUM) so that
the maximum value of tx_count can reach
(TX_DESC_NUM - 1), then hip04_mac_start_xmit can reurn
NETDEV_TX_BUSY.

Signed-off-by: Jiangfeng Xiao 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: hisilicon: make hip04_tx_reclaim non-reentrant

2019-08-29T06:28:43+00:00

[ Upstream commit 1a2c070ae805910a853b4a14818481ed2e17c727 ]

If hip04_tx_reclaim is interrupted while it is running
and then __napi_schedule continues to execute
hip04_rx_poll->hip04_tx_reclaim, reentrancy occurs
and oops is generated. So you need to mask the interrupt
during the hip04_tx_reclaim run.

The kernel oops exception stack is as follows:

Unable to handle kernel NULL pointer dereference
at virtual address 00000050
pgd = c0003000
[00000050] *pgd=80000000a04003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP ARM
Modules linked in: hip04_eth mtdblock mtd_blkdevs mtd
ohci_platform ehci_platform ohci_hcd ehci_hcd
vfat fat sd_mod usb_storage scsi_mod usbcore usb_common
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O    4.4.185 #1
Hardware name: Hisilicon A15
task: c0a250e0 task.stack: c0a00000
PC is at hip04_tx_reclaim+0xe0/0x17c [hip04_eth]
LR is at hip04_tx_reclaim+0x30/0x17c [hip04_eth]
pc : []    lr : []    psr: 600e0313
sp : c0a01d88  ip : 00000000  fp : c0601f9c
r10: 00000000  r9 : c3482380  r8 : 00000001
r7 : 00000000  r6 : 000000e1  r5 : c3482000  r4 : 0000000c
r3 : f2209800  r2 : 00000000  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 32c5387d  Table: 03d28c80  DAC: 55555555
Process swapper/0 (pid: 0, stack limit = 0xc0a00190)
Stack: (0xc0a01d88 to 0xc0a02000)
[] (hip04_tx_reclaim [hip04_eth]) from []
                                                (hip04_rx_poll+0x88/0x368 [hip04_eth])
[] (hip04_rx_poll [hip04_eth]) from [] (net_rx_action+0x114/0x34c)
[] (net_rx_action) from [] (__do_softirq+0x218/0x318)
[] (__do_softirq) from [] (irq_exit+0x88/0xac)
[] (irq_exit) from [] (msa_irq_exit+0x11c/0x1d4)
[] (msa_irq_exit) from [] (__handle_domain_irq+0x110/0x148)
[] (__handle_domain_irq) from [] (gic_handle_irq+0xd4/0x118)
[] (gic_handle_irq) from [] (__irq_svc+0x40/0x58)
Exception stack(0xc0a01f30 to 0xc0a01f78)
1f20:                                     c0ae8b40 00000000 00000000 00000000
1f40: 00000002 ffffe000 c0601f9c 00000000 ffffffff c0a2257c c0a22440 c0831a38
1f60: c0a01ec4 c0a01f80 c0203714 c0203718 600e0213 ffffffff
[] (__irq_svc) from [] (arch_cpu_idle+0x20/0x3c)
[] (arch_cpu_idle) from [] (cpu_startup_entry+0x244/0x29c)
[] (cpu_startup_entry) from [] (rest_init+0xc8/0x10c)
[] (rest_init) from [] (start_kernel+0x468/0x514)
Code: a40599e5 016086e2 018088e2 7660efe6 (503090e5)
---[ end trace 1db21d6d09c49d74 ]---
Kernel panic - not syncing: Fatal exception in interrupt
CPU3: stopping
CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D    O    4.4.185 #1

Signed-off-by: Jiangfeng Xiao 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: stmmac: tc: Do not return a fragment entry

2019-08-29T06:28:43+00:00

[ Upstream commit 4a6a1385a4db5f42258a40fcd497cbfd22075968 ]

Do not try to return a fragment entry from TC list. Otherwise we may not
clean properly allocated entries.

Signed-off-by: Jose Abreu 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: stmmac: Fix issues when number of Queues >= 4

2019-08-29T06:28:42+00:00

[ Upstream commit e8df7e8c233a18d2704e37ecff47583b494789d3 ]

When queues >= 4 we use different registers but we were not subtracting
the offset of 4. Fix this.

Found out by Coverity.

Signed-off-by: Jose Abreu 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'

2019-08-29T06:28:42+00:00

[ Upstream commit debea2cd3193ac868289e8893c3a719c265b0612 ]

A call to 'kfree_skb()' is missing in the error handling path of
'init_one()'.
This is already present in 'remove_one()' but is missing here.

Signed-off-by: Christophe JAILLET 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net/ethernet/qlogic/qed: force the string buffer NULL-terminated

2019-08-29T06:28:38+00:00

[ Upstream commit 3690c8c9a8edff0db077a38783112d8fe12a7dd2 ]

strncpy() does not ensure NULL-termination when the input string
size equals to the destination buffer size 30.
The output string is passed to qed_int_deassertion_aeu_bit()
which calls DP_INFO() and relies NULL-termination.

Use strlcpy instead. The other conditional branch above strncpy()
needs no fix as snprintf() ensures NULL-termination.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

can: peak_usb: force the string buffer NULL-terminated

2019-08-29T06:28:38+00:00

[ Upstream commit e787f19373b8a5fa24087800ed78314fd17b984a ]

strncpy() does not ensure NULL-termination when the input string size
equals to the destination buffer size IFNAMSIZ. The output string is
passed to dev_info() which relies on the NULL-termination.

Use strlcpy() instead.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Sasha Levin

can: sja1000: force the string buffer NULL-terminated

2019-08-29T06:28:37+00:00

[ Upstream commit cd28aa2e056cd1ea79fc5f24eed0ce868c6cab5c ]

strncpy() does not ensure NULL-termination when the input string size
equals to the destination buffer size IFNAMSIZ. The output string
'name' is passed to dev_info which relies on NULL-termination.

Use strlcpy() instead.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang 
Signed-off-by: Marc Kleine-Budde 
Signed-off-by: Sasha Levin