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 <h...@denx.de> > Reviewed-by: Marek Vasut <ma...@denx.de>
Applied both to linux-can. Tnx, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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