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MMCSD: Use cache aligned alloc for ioctl

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Some drivers can't easily work with buffers that are not cache aligned
and have an arbitrary length. Therefore use an aligned malloc instead.
This commit is contained in:
Christian Mauderer 2021-04-13 13:55:11 +02:00
parent 9b9a976847
commit 8aa3ddfbd7
1 changed files with 4 additions and 0 deletions
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4
freebsd/sys/dev/mmc/mmcsd.c
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@ -1196,7 +1196,11 @@ mmcsd_ioctl_cmd(struct mmcsd_part *part, struct mmc_ioc_cmd *mic, int fflag)
goto out;
}
if (len != 0) {
#ifndef __rtems__
dp = malloc(len, M_TEMP, M_WAITOK);
#else /* __rtems__ */
dp = rtems_cache_aligned_malloc(len);
#endif /* __rtems__ */
err = copyin((void *)(uintptr_t)mic->data_ptr, dp, len);
if (err != 0)
goto out;