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authorPrarit Bhargava <prarit@sgi.com>2005-12-23 13:33:25 -0500
committerTony Luck <tony.luck@intel.com>2006-01-13 14:13:08 -0800
commit6d6e420005f3753392b608a614eee8475bdc16f7 (patch)
treea59860fc15ce4e92c00015d068de4aba12a9b889 /block/Kconfig.iosched
parentcfbb1426bd76c4ba6ec4491c8df2a5dd3d984750 (diff)
downloadblackbird-op-linux-6d6e420005f3753392b608a614eee8475bdc16f7.tar.gz
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[IA64-SGI] Fix sn_flush_device_kernel & spinlock initialization
This patch separates the sn_flush_device_list struct into kernel and common (both kernel and PROM accessible) structures. As it was, if the size of a spinlock_t changed (due to additional CONFIG options, etc.) the sal call which populated the sn_flush_device_list structs would erroneously write data (and cause memory corruption and/or a panic). This patch does the following: 1. Removes sn_flush_device_list and adds sn_flush_device_common and sn_flush_device_kernel. 2. Adds a new SAL call to populate a sn_flush_device_common struct per device, not per widget as previously done. 3. Correctly initializes each device's sn_flush_device_kernel spinlock_t struct (before it was only doing each widget's first device). Signed-off-by: Prarit Bhargava <prarit@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
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