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From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-usb@vger.kernel.org
Cc: linux-media@vger.kernel.org, gregkh@linuxfoundation.org,
	laurent.pinchart@ideasonboard.com, hdegoede@redhat.com,
	Thinh.Nguyen@synopsys.com,
	"Amardeep Rai" <amardeep.rai@intel.com>,
	"Kannappan R" <r.kannappan@intel.com>,
	"Mathias Nyman" <mathias.nyman@linux.intel.com>,
	"Alan Stern" <stern@rowland.harvard.edu>,
	"Michał Pecio" <michal.pecio@gmail.com>
Subject: [PATCH v5 3/9] usb: core: eUSB2 companion descriptor is for isoc IN endpoints only
Date: Wed, 20 Aug 2025 17:38:18 +0300	[thread overview]
Message-ID: <20250820143824.551777-4-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20250820143824.551777-1-sakari.ailus@linux.intel.com>

The eUSB2 isochronous double bandwidth endpoint descriptor is allowed for
the isochronous IN endpoints, according to the ECN. Do not parse these
descriptors if they are found in interrupt or OUT endpoints.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/usb/core/config.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 29fcbd6de482..baf5bc844b6f 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -508,8 +508,7 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno,
 
 	/* Parse a possible eUSB2 periodic endpoint companion descriptor */
 	if (udev->speed == USB_SPEED_HIGH && bcdUSB == 0x0220 &&
-	    !le16_to_cpu(d->wMaxPacketSize) &&
-	    (usb_endpoint_xfer_isoc(d) || usb_endpoint_xfer_int(d)))
+	    !le16_to_cpu(d->wMaxPacketSize) && usb_endpoint_is_isoc_in(d))
 		usb_parse_eusb2_isoc_endpoint_companion(ddev, cfgno, inum, asnum,
 							endpoint, buffer, size);
 
-- 
2.47.2


  parent reply	other threads:[~2025-08-20 14:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-20 14:38 [PATCH v5 0/9] eUSB2 Double Isochronous IN Bandwidth support Sakari Ailus
2025-08-20 14:38 ` [PATCH v5 1/9] usb: core: Use le16_to_cpu() to read __le16 value in usb_parse_endpoint() Sakari Ailus
2025-08-26 12:50   ` Mathias Nyman
2025-08-20 14:38 ` [PATCH v5 2/9] usb: core: Parse eUSB2 companion descriptors for high speed devices only Sakari Ailus
2025-08-26 12:50   ` Mathias Nyman
2025-08-20 14:38 ` Sakari Ailus [this message]
2025-08-26 12:52   ` [PATCH v5 3/9] usb: core: eUSB2 companion descriptor is for isoc IN endpoints only Mathias Nyman
2025-08-20 14:38 ` [PATCH v5 4/9] usb: core: Add a function to get USB version independent periodic payload Sakari Ailus
2025-08-20 14:38 ` [PATCH v5 5/9] usb: xhci: Use usb_endpoint_max_periodic_payload() Sakari Ailus
2025-08-21  8:22   ` Mathias Nyman
2025-08-20 14:38 ` [PATCH v5 6/9] usb: core: Introduce usb_endpoint_is_hs_isoc_double() Sakari Ailus
2025-08-26 12:53   ` Mathias Nyman
2025-08-20 14:38 ` [PATCH v5 7/9] usb: xhci: Add host support for eUSB2 double isochronous bandwidth devices Sakari Ailus
2025-08-20 14:38 ` [PATCH v5 8/9] usb: core: support eUSB2 double bandwidth large isoc URB frames Sakari Ailus
2025-08-20 14:38 ` [PATCH v5 9/9] media: uvcvideo: eUSB2 double isochronous bandwidth support Sakari Ailus
2025-08-20 15:21   ` Ricardo Ribalda
2025-08-21  9:51     ` Sakari Ailus
2025-08-26 13:28 ` [PATCH v5 0/9] eUSB2 Double Isochronous IN Bandwidth support Mathias Nyman

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