From: Mike Habeck Date: Wed, 26 Apr 2006 17:05:50 +0000 (-0500) Subject: [IA64-SGI] fix SGI Altix tioce_reserve_m32() bug X-Git-Tag: v2.6.17-rc4~135^2~2 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=cda3d4a069b915cf46e640bb6872a9d9aefeaabe;p=linux-2.6-omap-h63xx.git [IA64-SGI] fix SGI Altix tioce_reserve_m32() bug The following patch fixes a bug in the SGI Altix tioce_reserve_m32() code. The bug was that we could walking past the end of the CE ASIC 32/40bit PMU ATE Buffer, resulting in a PIO Reply Error. Signed-off-by: Mike Habeck Signed-off-by: Tony Luck --- diff --git a/arch/ia64/sn/pci/tioce_provider.c b/arch/ia64/sn/pci/tioce_provider.c index fa073cc4b56..833295624e5 100644 --- a/arch/ia64/sn/pci/tioce_provider.c +++ b/arch/ia64/sn/pci/tioce_provider.c @@ -682,9 +682,6 @@ tioce_reserve_m32(struct tioce_kernel *ce_kern, u64 base, u64 limit) int ate_index, last_ate, ps; struct tioce *ce_mmr; - if (!TIOCE_M32_ADDR(base)) - return; - ce_mmr = (struct tioce *)ce_kern->ce_common->ce_pcibus.bs_base; ps = ce_kern->ce_ate3240_pagesize; ate_index = ATE_PAGE(base, ps); @@ -693,6 +690,9 @@ tioce_reserve_m32(struct tioce_kernel *ce_kern, u64 base, u64 limit) if (ate_index < 64) ate_index = 64; + if (last_ate >= TIOCE_NUM_M3240_ATES) + last_ate = TIOCE_NUM_M3240_ATES - 1; + while (ate_index <= last_ate) { u64 ate;