r8169: improve rtl_tx

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We can simplify the for() condition and eliminate variable tx_left.
The change also considers that tp->cur_tx may be incremented by a
racing rtl8169_start_xmit().
In addition replace the write to tp->dirty_tx and the following
smp_mb() with an equivalent call to smp_store_mb(). This implicitly
adds a WRITE_ONCE() to the write.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/c2e19e5e-3d3f-d663-af32-13c3374f5def@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Heiner Kallweit 2020-11-11 22:56:29 +01:00 • committed by Jakub Kicinski

parent 95f3c5458d

commit ca1ab89cd2

1 changed files with 3 additions and 4 deletions

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drivers/net/ethernet/realtek/r8169_main.c

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