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| /openbmc/linux/drivers/ntb/ |
| H A D | ntb_transport.c | diff 5a7693e6bbf19b22fd6c1d2c4b7beb0a03969e2c Tue Aug 22 11:04:57 CDT 2023 Dave Jiang <dave.jiang@intel.com> ntb: Fix calculation ntb_transport_tx_free_entry()
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: e74bfeedad08 ("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>
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