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ALSA: us122l: Use alloc_pages_exact() 

alloc_pages_exact() is more suitable choice for allocating the sound
buffers, as it doesn't need to align with power-of-two.  Along with
the conversion, we can drop __GFP_COMP as well.

The patch also replace the error messages to be more explicit.

Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-03-16 08:48:52 +01:00
parent 734b5a0bbd
commit 36b8defc44
1 changed files with 8 additions and 12 deletions
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20
sound/usb/usx2y/usb_stream.c
View File

@ -155,9 +155,9 @@ void usb_stream_free(struct usb_stream_kernel *sk)
if (!s)
return;
free_pages((unsigned long)sk->write_page, get_order(s->write_size));
free_pages_exact(sk->write_page, s->write_size);
sk->write_page = NULL;
free_pages((unsigned long)s, get_order(s->read_size));
free_pages_exact(s, s->read_size);
sk->s = NULL;
}
@ -172,7 +172,6 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
int read_size = sizeof(struct usb_stream);
int write_size;
int usb_frames = dev->speed == USB_SPEED_HIGH ? 8000 : 1000;
int pg;
in_pipe = usb_rcvisocpipe(dev, in_endpoint);
out_pipe = usb_sndisocpipe(dev, out_endpoint);
@ -202,11 +201,10 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
goto out;
}
pg = get_order(read_size);
sk->s = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO|
__GFP_NOWARN, pg);
sk->s = alloc_pages_exact(read_size,
GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
if (!sk->s) {
snd_printk(KERN_WARNING "couldn't __get_free_pages()\n");
pr_warn("us122l: couldn't allocate read buffer\n");
goto out;
}
sk->s->cfg.version = USB_STREAM_INTERFACE_VERSION;
@ -221,13 +219,11 @@ struct usb_stream *usb_stream_new(struct usb_stream_kernel *sk,
sk->s->period_size = frame_size * period_frames;
sk->s->write_size = write_size;
pg = get_order(write_size);
sk->write_page =
(void *)__get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO|
__GFP_NOWARN, pg);
sk->write_page = alloc_pages_exact(write_size,
GFP_KERNEL | __GFP_ZERO | __GFP_NOWARN);
if (!sk->write_page) {
snd_printk(KERN_WARNING "couldn't __get_free_pages()\n");
pr_warn("us122l: couldn't allocate write buffer\n");
usb_stream_free(sk);
return NULL;
}