diff mbox series

[5.4,045/309] ALSA: usb-audio: Fix endianess in descriptor validation

Message ID 20200210122410.375311791@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Feb. 10, 2020, 12:30 p.m. UTC 
From: Takashi Iwai <tiwai@suse.de>

commit f8e5f90b3a53bb75f05124ed19156388379a337d upstream.

I overlooked that some fields are words and need the converts from
LE in the recently added USB descriptor validation code.
This patch fixes those with the proper macro usages.

Fixes: 57f8770620e9 ("ALSA: usb-audio: More validations of descriptor units")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200201080530.22390-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/usb/validate.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

--- a/sound/usb/validate.c
+++ b/sound/usb/validate.c
@@ -110,7 +110,7 @@  static bool validate_processing_unit(con
 	default:
 		if (v->type == UAC1_EXTENSION_UNIT)
 			return true; /* OK */
-		switch (d->wProcessType) {
+		switch (le16_to_cpu(d->wProcessType)) {
 		case UAC_PROCESS_UP_DOWNMIX:
 		case UAC_PROCESS_DOLBY_PROLOGIC:
 			if (d->bLength < len + 1) /* bNrModes */
@@ -125,7 +125,7 @@  static bool validate_processing_unit(con
 	case UAC_VERSION_2:
 		if (v->type == UAC2_EXTENSION_UNIT_V2)
 			return true; /* OK */
-		switch (d->wProcessType) {
+		switch (le16_to_cpu(d->wProcessType)) {
 		case UAC2_PROCESS_UP_DOWNMIX:
 		case UAC2_PROCESS_DOLBY_PROLOCIC: /* SiC! */
 			if (d->bLength < len + 1) /* bNrModes */
@@ -142,7 +142,7 @@  static bool validate_processing_unit(con
 			len += 2; /* wClusterDescrID */
 			break;
 		}
-		switch (d->wProcessType) {
+		switch (le16_to_cpu(d->wProcessType)) {
 		case UAC3_PROCESS_UP_DOWNMIX:
 			if (d->bLength < len + 1) /* bNrModes */
 				return false;