Dave Jiang 5a3e327dc3 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>		2023-09-13 09:43:02 +02:00
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ntb_transport.c	ntb: Fix calculation ntb_transport_tx_free_entry()	2023-09-13 09:43:02 +02:00