EtherExpress 16 stall fix

Mark Hemment (markhe@sco.COM)
Thu, 26 Jun 1997 18:24:50 +0100 (BST)

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Hi,

I had to swap my network card for an EtherExpress16, and noticed than
when I was ftp'ing _into_ my box (from a local machine) the transfer would
stall. The ftp was the only network traffic.

It appears that the networking layer calls the driver's xmit function
when 'tbusy' is set. For the eexpress, this caused the cards interrupts
to be disabled, but not immediately re-enabled. Hence the stall.

The attached patch (against 2.1.43) solves the problem. Please note,
the "udelay(50)" appears necessary on my box or else I get some (not many)
tx-interrupts with no status. (Infact, I still do get some under heavy
transmit, but no longer for receive).

Could anyone with this card, confirm they see this problem and the patch
fixes it. Thanks.

Regards,

markhe

PS: I couldn't find any doc on the i82586 online. Does anyone have any
references?

-----------------------------------------------------
Mark Hemment UNIX/C Software Engineer (contractor)
"Success has many fathers. Failure is a b**tard"
-----------------------------------------------------

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