ALSA: ctxfi - fix PTP address initialization
After hours of debugging, I finally found the reason why some source
and runtime combination does not work. The PTP (page table pages)
address must be aligned. I am not sure how much, but alignment to
PAGE_SIZE is sufficient. Also, use ALSA's page allocation routines
to ensure proper virtual -> physical address translation.
Cc: <stable@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c
index cb65bd0..459c1f6 100644
--- a/sound/pci/ctxfi/ctatc.c
+++ b/sound/pci/ctxfi/ctatc.c
@@ -166,18 +166,7 @@
static unsigned long atc_get_ptp_phys(struct ct_atc *atc, int index)
{
- struct ct_vm *vm;
- void *kvirt_addr;
- unsigned long phys_addr;
-
- vm = atc->vm;
- kvirt_addr = vm->get_ptp_virt(vm, index);
- if (kvirt_addr == NULL)
- phys_addr = (~0UL);
- else
- phys_addr = virt_to_phys(kvirt_addr);
-
- return phys_addr;
+ return atc->vm->get_ptp_phys(atc->vm, index);
}
static unsigned int convert_format(snd_pcm_format_t snd_format)
@@ -1669,7 +1658,7 @@
}
/* Set up device virtual memory management object */
- err = ct_vm_create(&atc->vm);
+ err = ct_vm_create(&atc->vm, pci);
if (err < 0)
goto error1;