On 1/7/21 8:00 PM, Jakub Kicinski wrote:
> On Thu, 7 Jan 2021 10:48:56 +0100 Marc Kleine-Budde wrote:
>> +struct __packed tcan4x5x_map_buf {
>> + struct tcan4x5x_buf_cmd cmd;
>> + u8 data[256 * sizeof(u32)];
>> +} ____cacheline_aligned;
>
> Interesting attribute combo, I must say.
__packed as it's the byte stream send to the chip via SPI.
____cacheline_aligned, as it might be subject to DMA mapping in the SPI host
driver. An alternative would be to allocate these with separate kmalloc().
regards,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
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