Messages in this thread | | | Subject | Re: [PATCH v2 1/2] net, can, ifi: fix "write buffer full" error | From | Marek Vasut <> | Date | Thu, 8 Feb 2018 20:22:54 +0100 |
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On 02/08/2018 03:46 PM, Marc Kleine-Budde wrote: > On 02/08/2018 07:47 AM, Heiko Schocher wrote: >> the driver reads in the ISR first the IRQpending register, >> and clears after that in a write *all* bits in it. >> >> It could happen that the isr register raise bits between >> this 2 register accesses, which leads in lost bits ... >> >> In case it clears "TX message sent successfully", the driver >> never sends any Tx data, and buffers to userspace run over. >> >> Fixed this: >> clear only the bits in the IRQpending register, the >> driver had read. >> >> Signed-off-by: Heiko Schocher <hs@denx.de> >> Reviewed-by: Marek Vasut <marex@denx.de> > > Applied both to linux-can.
Can you also apply them to stable, so they get into 4.9.x etc ?
Thanks!
-- Best regards, Marek Vasut
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