ide_pio_bytes() disables interrupts around kmap_atomic(). This is a
leftover from the old kmap_atomic() implementation which relied on fixed
mapping slots, so the caller had to make sure that the same slot could not
be reused from an interrupting context.
kmap_atomic() was changed to dynamic slots long ago and commit
1ec9c5ddc17a
("include/linux/highmem.h: remove the second argument of k[un]map_atomic()")
removed the slot assignements, but the callers were not checked for now
redundant interrupt disabling.
Remove the conditional interrupt disable.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
while (len) {
unsigned nr_bytes = min(len, cursg->length - cmd->cursg_ofs);
- int page_is_high;
page = sg_page(cursg);
offset = cursg->offset + cmd->cursg_ofs;
nr_bytes = min_t(unsigned, nr_bytes, (PAGE_SIZE - offset));
- page_is_high = PageHighMem(page);
- if (page_is_high)
- local_irq_save(flags);
-
buf = kmap_atomic(page) + offset;
cmd->nleft -= nr_bytes;
kunmap_atomic(buf);
- if (page_is_high)
- local_irq_restore(flags);
-
len -= nr_bytes;
}
}