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Commit 70b47b88 authored by Sumit.Saxena@lsi.com's avatar Sumit.Saxena@lsi.com Committed by James Bottomley
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[SCSI] megaraid_sas: Update balance count in driver to be in sync of firmware 



Signed-off-by: default avatarSumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: default avatarKashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent b5bccadd

drivers/scsi/megaraid/megaraid_sas_fp.c

+3 −2
Original line number Diff line number Diff line
@@ -503,8 +503,9 @@ u8 megasas_get_best_arm(struct LD_LOAD_BALANCE_INFO *lbInfo, u8 arm, u64 block, 
	diff1 = ABS_DIFF(block, lbInfo->last_accessed_block[1]);

	bestArm = (diff0 <= diff1 ? 0 : 1);



	if ((bestArm == arm && pend0 > pend1 + 16)  ||

	    (bestArm != arm && pend1 > pend0 + 16))

	/*Make balance count from 16 to 4 to keep driver in sync with Firmware*/

	if ((bestArm == arm && pend0 > pend1 + 4)  ||

	    (bestArm != arm && pend1 > pend0 + 4))

		bestArm ^= 1;



	/* Update the last accessed block on the correct pd */