linux-stable/drivers/ntb
Dave Jiang e4d447a607 ntb: Fix calculation ntb_transport_tx_free_entry()
commit 5a7693e6bb upstream.

ntb_transport_tx_free_entry() never returns 0 with the current
calculation. If head == tail, then it would return qp->tx_max_entry.
Change compare to tail >= head and when they are equal, a 0 would be
returned.

Fixes: e74bfeedad ("NTB: Add flow control to the ntb_netdev")
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: renlonglong <ren.longlong@h3c.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-23 10:47:00 +02:00
..
hw ntb: intel: Fix error handling in intel_ntb_pci_driver_init() 2023-08-11 11:33:43 +02:00
test ntb: use correct mw_count function in ntb_tool and ntb_transport 2017-07-17 12:56:15 -04:00
Kconfig
Makefile
ntb.c NTB: Fix the default port and peer numbers for legacy drivers 2020-06-25 15:41:50 +02:00
ntb_transport.c ntb: Fix calculation ntb_transport_tx_free_entry() 2023-09-23 10:47:00 +02:00