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usb: gadget: f_tcm: Limit number of sessions

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Only allocate up to UASP_SS_EP_COMP_NUM_STREAMS number of session tags.
We should not be using more than UASP_SS_EP_COMP_NUM_STREAMS of tags due
to the number of commands limit we imposed. Each command uses a unique
tag. Any more than that is unnecessary. By limiting 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>
Link: https://lore.kernel.org/r/017016ffcab2f3c284d863fc42483b83dbd21b35.1733876548.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thinh Nguyen 2024-12-11 00:32:25 +00:00 committed by Greg Kroah-Hartman
parent d0c188cd8d
commit 8840047985
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/function/tcm.h
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@ -24,7 +24,7 @@ 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 UASP_SS_EP_COMP_NUM_STREAMS
struct tcm_usbg_nexus {
struct se_session *tvn_se_sess;