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  1. 22 8月, 2020 1 次提交
    • T
      net: dsa: b53: check for timeout · 774d977a
      由 Tom Rix 提交于 
      clang static analysis reports this problem

b53_common.c:1583:13: warning: The left expression of the compound
  assignment is an uninitialized value. The computed value will
  also be garbage
        ent.port &= ~BIT(port);
        ~~~~~~~~ ^

ent is set by a successful call to b53_arl_read().  Unsuccessful
calls are caught by an switch statement handling specific returns.
b32_arl_read() calls b53_arl_op_wait() which fails with the
unhandled -ETIMEDOUT.

So add -ETIMEDOUT to the switch statement.  Because
b53_arl_op_wait() already prints out a message, do not add another
one.

Fixes: 1da6df85 ("net: dsa: b53: Implement ARL add/del/dump operations")
Signed-off-by: NTom Rix <trix@redhat.com>
Acked-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      774d977a
  3. 21 8月, 2020 11 次提交
  5. 20 8月, 2020 8 次提交
    • W
      net: gemini: Fix missing free_netdev() in error path of gemini_ethernet_port_probe() · cf96d977
      由 Wang Hai 提交于 
      Replace alloc_etherdev_mq with devm_alloc_etherdev_mqs. In this way,
when probe fails, netdev can be freed automatically.

Fixes: 4d5ae32f ("net: ethernet: Add a driver for Gemini gigabit ethernet")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NWang Hai <wanghai38@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      cf96d977
    • S
      net: atlantic: Use readx_poll_timeout() for large timeout · 9553b62c
      由 Sebastian Andrzej Siewior 提交于 
      Commit
   8dcf2ad3 ("net: atlantic: add hwmon getter for MAC temperature")

implemented a read callback with an udelay(10000U). This fails to
compile on ARM because the delay is >1ms. I doubt that it is needed to
spin for 10ms even if possible on x86.

>From looking at the code, the context appears to be preemptible so using
usleep() should work and avoid busy spinning.

Use readx_poll_timeout() in the poll loop.

Fixes: 8dcf2ad3 ("net: atlantic: add hwmon getter for MAC temperature")
Cc: Mark Starovoytov <mstarovoitov@marvell.com>
Cc: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: NSebastian Andrzej Siewior <sebastian@breakpoint.cc>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      9553b62c
    • M
      ptp: ptp_clockmatrix: use i2c_master_send for i2c write · 957ff427
      由 Min Li 提交于 
      The old code for i2c write would break on some controllers, which fails
at handling Repeated Start Condition. So we will just use i2c_master_send
to handle write in one transanction.

Changes since v1:
- Remove indentation change
Signed-off-by: NMin Li <min.li.xe@renesas.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      957ff427
    • J
      netlink: fix state reallocation in policy export · d1fb5559
      由 Johannes Berg 提交于 
      Evidently, when I did this previously, we didn't have more than
10 policies and didn't run into the reallocation path, because
it's missing a memset() for the unused policies. Fix that.

Fixes: d07dcf9a ("netlink: add infrastructure to expose policies to userspace")
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d1fb5559
    • D
      Merge branch 'Bug-fixes-for-ENA-ethernet-driver' · b4c8998b
      由 David S. Miller 提交于 
      Shay Agroskin says:

====================
Bug fixes for ENA ethernet driver

This series adds the following:
- Fix undesired call to ena_restore after returning from suspend
- Fix condition inside a WARN_ON
- Fix overriding previous value when updating missed_tx statistic

v1->v2:
- fix bug when calling reset routine after device resources are freed (Jakub)

v2->v3:
- fix wrong hash in 'Fixes' tag
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b4c8998b
    • S
      net: ena: Make missed_tx stat incremental · ccd143e5
      由 Shay Agroskin 提交于 
      Most statistics in ena driver are incremented, meaning that a stat's
value is a sum of all increases done to it since driver/queue
initialization.

This patch makes all statistics this way, effectively making missed_tx
statistic incremental.
Also added a comment regarding rx_drops and tx_drops to make it
clearer how these counters are calculated.

Fixes: 11095fdb ("net: ena: add statistics for missed tx packets")
Signed-off-by: NShay Agroskin <shayagr@amazon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ccd143e5
    • S
      net: ena: Change WARN_ON expression in ena_del_napi_in_range() · 8b147f6f
      由 Shay Agroskin 提交于 
      The ena_del_napi_in_range() function unregisters the napi handler for
rings in a given range.
This function had the following WARN_ON macro:

    WARN_ON(ENA_IS_XDP_INDEX(adapter, i) &&
	    adapter->ena_napi[i].xdp_ring);

This macro prints the call stack if the expression inside of it is
true [1], but the expression inside of it is the wanted situation.
The expression checks whether the ring has an XDP queue and its index
corresponds to a XDP one.

This patch changes the expression to
    !ENA_IS_XDP_INDEX(adapter, i) && adapter->ena_napi[i].xdp_ring
which indicates an unwanted situation.

Also, change the structure of the function. The napi handler is
unregistered for all rings, and so there's no need to check whether the
index is an XDP index or not. By removing this check the code becomes
much more readable.

Fixes: 548c4940 ("net: ena: Implement XDP_TX action")
Signed-off-by: NShay Agroskin <shayagr@amazon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      8b147f6f
    • S
      net: ena: Prevent reset after device destruction · 63d4a4c1
      由 Shay Agroskin 提交于 
      The reset work is scheduled by the timer routine whenever it
detects that a device reset is required (e.g. when a keep_alive signal
is missing).
When releasing device resources in ena_destroy_device() the driver
cancels the scheduling of the timer routine without destroying the reset
work explicitly.

This creates the following bug:
    The driver is suspended and the ena_suspend() function is called
	-> This function calls ena_destroy_device() to free the net device
	   resources
	    -> The driver waits for the timer routine to finish
	    its execution and then cancels it, thus preventing from it
	    to be called again.

    If, in its final execution, the timer routine schedules a reset,
    the reset routine might be called afterwards,and a redundant call to
    ena_restore_device() would be made.

By changing the reset routine we allow it to read the device's state
accurately.
This is achieved by checking whether ENA_FLAG_TRIGGER_RESET flag is set
before resetting the device and making both the destruction function and
the flag check are under rtnl lock.
The ENA_FLAG_TRIGGER_RESET is cleared at the end of the destruction
routine. Also surround the flag check with 'likely' because
we expect that the reset routine would be called only when
ENA_FLAG_TRIGGER_RESET flag is set.

The destruction of the timer and reset services in __ena_shutoff() have to
stay, even though the timer routine is destroyed in ena_destroy_device().
This is to avoid a case in which the reset routine is scheduled after
free_netdev() in __ena_shutoff(), which would create an access to freed
memory in adapter->flags.

Fixes: 8c5c7abd ("net: ena: add power management ops to the ENA driver")
Signed-off-by: NShay Agroskin <shayagr@amazon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      63d4a4c1
  7. 19 8月, 2020 19 次提交
  9. 18 8月, 2020 1 次提交