Messages in this thread Patch in this message | | | Subject | cciss updates [4/6] cylinder calculation fix for 2.6.8-rc3 | From | mikem <> | Date | Thu, 05 Aug 2004 14:37:55 -0500 |
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Patch 4 of 6
This patch fixes our cylinder calculations. Without his fix the number of cylinders maxes out at 65535. Aplies against 2.6.8-rc3. Please apply patches in order.
Thanks, mikem ------------------------------------------------------------------------------- diff -burpN lx268-rc3-p003/drivers/block/cciss.c lx268-rc3/drivers/block/cciss.c --- lx268-rc3-p003/drivers/block/cciss.c 2004-08-05 10:40:00.865910000 -0500 +++ lx268-rc3/drivers/block/cciss.c 2004-08-05 11:16:03.222182640 -0500 @@ -1470,6 +1470,8 @@ static void cciss_geometry_inquiry(int c drv->sectors = 32; // Sectors per track drv->cylinders = total_size / 255 / 32; } else { + unsigned int t; + drv->block_size = block_size; drv->nr_blocks = total_size; drv->heads = inq_buff->data_byte[6]; @@ -1477,6 +1479,10 @@ static void cciss_geometry_inquiry(int c drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; drv->cylinders += inq_buff->data_byte[5]; drv->raid_level = inq_buff->data_byte[8]; + t = drv->heads * drv->sectors; + if (t > 1) { + drv->cylinders = total_size/t; + } } } else { /* Get geometry failed */ printk(KERN_WARNING "cciss: reading geometry failed, "
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