[PATCH v2 07/25] usb: gadget: f_tcm: Limit number of sessions

Thinh Nguyen
2022-07-19T03:20:46Z

Only allocate up to USBG_NUM_CMDS number of session tags. We should not
be using more than USBG_NUM_CMDS of tags due to the number of commands
limit we imposed. Each command uses a unique tag. Any more than that is
unnecessary. By limitting it, we can detect an issue in our driver
immediately should we run out of session tags.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
Changes in v2:
- Add more comments in change log for the change reason.

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 bcbe35bb5015..df768559fb60 100644
--- a/drivers/usb/gadget/function/tcm.h
+++ b/drivers/usb/gadget/function/tcm.h
@@ -26,7 +26,7 @@ enum {
#define USB_G_ALT_INT_BBB 0
#define USB_G_ALT_INT_UAS 1

-#define USB_G_DEFAULT_SESSION_TAGS 128
+#define USB_G_DEFAULT_SESSION_TAGS USBG_NUM_CMDS

struct tcm_usbg_nexus {
struct se_session *tvn_se_sess;
--
2.28.0