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Diffstat (limited to 'include/linux/ssb/ssb.h')
-rw-r--r--include/linux/ssb/ssb.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
index 0eaa98424f0..cacbae53194 100644
--- a/include/linux/ssb/ssb.h
+++ b/include/linux/ssb/ssb.h
@@ -231,7 +231,8 @@ struct ssb_bus {
struct ssb_device *mapped_device;
/* Currently mapped PCMCIA segment. (bustype == SSB_BUSTYPE_PCMCIA only) */
u8 mapped_pcmcia_seg;
- /* Lock for core and segment switching. */
+ /* Lock for core and segment switching.
+ * On PCMCIA-host busses this is used to protect the whole MMIO access. */
spinlock_t bar_lock;
/* The bus this backplane is running on. */