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| author | Andy Shevchenko <[email protected]> | 2021-12-20 13:32:50 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2021-12-21 08:18:44 +0000 |
| commit | d6d9d17abac8d337ecb052b47e918ca9c0b4ba1b (patch) | |
| tree | beed330b05aae4a2e16316b2f4f97b7f3f91b1f2 /drivers/usb/class/cdc-acm.c | |
| parent | tty/ldsem: Fix syntax errors in comments (diff) | |
| download | kernel-d6d9d17abac8d337ecb052b47e918ca9c0b4ba1b.tar.gz kernel-d6d9d17abac8d337ecb052b47e918ca9c0b4ba1b.zip | |
tty: tty_io: Switch to vmalloc() fallback in case of TTY_NO_WRITE_SPLIT
When TTY_NO_WRITE_SPLIT is set and 64 KiB chunks are used, allow
vmalloc() fallback. Supply __GFP_RETRY_MAYFAIL to make kmalloc()
preferable over vmalloc() since we may want a better performance.
Note, both current users copy data to another buffer anyway, so
the type of our allocation doesn't affect their expectations.
Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index b3ce7338cb6b..9b9aea24d58c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -685,10 +685,6 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty) if (retval) goto error_get_interface; - /* - * FIXME: Why do we need this? Allocating 64K of physically contiguous - * memory is really nasty... - */ set_bit(TTY_NO_WRITE_SPLIT, &tty->flags); acm->control->needs_remote_wakeup = 1; |