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From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org
Subject: [PATCH v2 09/25] usb: gadget: f_tcm: Use extra number of commands
Date: Mon, 18 Jul 2022 18:27:00 -0700	[thread overview]
Message-ID: <3310604a0940fd3029404b9d7ba3cdf2800f6cf4.1658192351.git.Thinh.Nguyen@synopsys.com> (raw)
In-Reply-To: <cover.1658192351.git.Thinh.Nguyen@synopsys.com>

To properly respond to host sending more commands than the number of
streams the device advertises, the device needs to be able to reject the
command with a response. Allocate an extra request to handle 1 more
command than the number of streams.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
 Changes in v2:
 - None

 drivers/usb/gadget/function/tcm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/tcm.h b/drivers/usb/gadget/function/tcm.h
index df768559fb60..c7e6d36afd3a 100644
--- a/drivers/usb/gadget/function/tcm.h
+++ b/drivers/usb/gadget/function/tcm.h
@@ -16,7 +16,7 @@
 #define UASP_SS_EP_COMP_LOG_STREAMS 5
 #define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS)
 
-#define USBG_NUM_CMDS		UASP_SS_EP_COMP_NUM_STREAMS
+#define USBG_NUM_CMDS		(UASP_SS_EP_COMP_NUM_STREAMS + 1)
 
 enum {
 	USB_G_STR_INT_UAS = 0,
-- 
2.28.0


  parent reply	other threads:[~2022-07-19  2:07 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-19  1:26 [PATCH v2 00/25] usb: gadget: f_tcm: Enhance UASP driver Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 01/25] target: Add overlapped response to tmrsp_table Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 02/25] target: Add common TMR enum Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 03/25] usb: gadget: f_tcm: Increase stream count Thinh Nguyen
2022-07-19  9:02   ` Sergei Shtylyov
2022-07-19  1:26 ` [PATCH v2 04/25] usb: gadget: f_tcm: Increase bMaxBurst Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 05/25] usb: gadget: f_tcm: Don't set static stream_id Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 06/25] usb: gadget: f_tcm: Allocate matching number of commands to streams Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 07/25] usb: gadget: f_tcm: Limit number of sessions Thinh Nguyen
2022-07-19  1:26 ` [PATCH v2 08/25] usb: gadget: f_tcm: Handle multiple commands in parallel Thinh Nguyen
2022-07-19  1:27 ` Thinh Nguyen [this message]
2022-07-19  1:27 ` [PATCH v2 10/25] usb: gadget: f_tcm: Return ATA cmd direction Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 11/25] usb: gadget: f_tcm: Execute command on write completion Thinh Nguyen
2022-08-26  7:00   ` Sebastian Andrzej Siewior
2022-08-26 18:37     ` Thinh Nguyen
2022-08-29 19:49       ` Sebastian Andrzej Siewior
2022-08-29 21:47         ` Thinh Nguyen
2022-08-30 10:03           ` Sebastian Andrzej Siewior
2022-07-19  1:27 ` [PATCH v2 12/25] usb: gadget: f_tcm: Minor cleanup redundant code Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 13/25] usb: gadget: f_tcm: Don't free command immediately Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 14/25] usb: gadget: f_tcm: Translate error to sense Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 15/25] usb: gadget: f_tcm: Cleanup unused variable Thinh Nguyen
2022-08-26  7:17   ` Sebastian Andrzej Siewior
2022-08-26 18:41     ` Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 16/25] usb: gadget: f_tcm: Update state on data write Thinh Nguyen
2022-08-26  7:22   ` Sebastian Andrzej Siewior
2022-08-26 19:01     ` Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 17/25] usb: gadget: f_tcm: Handle abort command Thinh Nguyen
2022-08-26  7:48   ` Sebastian Andrzej Siewior
2022-08-26 19:04     ` Thinh Nguyen
2022-07-19  1:27 ` [PATCH v2 18/25] usb: gadget: f_tcm: Cleanup requests on ep disable Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 19/25] usb: gadget: f_tcm: Decrement command ref count on cleanup Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 20/25] usb: gadget: f_tcm: Save CPU ID per command Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 21/25] usb: gadget: f_tcm: Get stream by tag Thinh Nguyen
2022-08-26  9:06   ` Sebastian Andrzej Siewior
2022-08-26 19:05     ` Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 22/25] usb: gadget: f_tcm: Send sense on cancelled transfer Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 23/25] usb: gadget: f_tcm: Handle TASK_MANAGEMENT commands Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 24/25] usb: gadget: f_tcm: Check overlapped command Thinh Nguyen
2022-08-26 10:46   ` Sebastian Andrzej Siewior
2022-08-26 19:27     ` Thinh Nguyen
2022-07-19  1:28 ` [PATCH v2 25/25] usb: gadget: f_tcm: Comply with UAS Task Management requirement Thinh Nguyen
2022-08-19  8:31 ` [PATCH v2 00/25] usb: gadget: f_tcm: Enhance UASP driver Greg Kroah-Hartman
2022-08-19 17:18   ` Thinh Nguyen
2022-08-26  2:34     ` Thinh Nguyen
2022-08-26 10:52 ` Sebastian Andrzej Siewior
2022-08-26 19:36   ` Thinh Nguyen

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