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authorGeert Uytterhoeven <geert@linux-m68k.org>2013-06-29 12:40:20 +0400
committerGeert Uytterhoeven <geert@linux-m68k.org>2013-11-26 14:09:03 +0400
commitc293738e6d8dfb9c941759855b5161fde449644d (patch)
tree3c2d4b2041af3e2fe5a8a4702cdfe49fca3e1f7f /include/linux/zorro.h
parent1ea636eb68322198e08aebdede141244d98e8299 (diff)
downloadlinux-c293738e6d8dfb9c941759855b5161fde449644d.tar.xz
zorro: Do not allocate zorro_autocon[] statically
Currently the array of Zorro devices is allocated statically, wasting up to 4.5 KiB when running an Amiga or multi-platform kernel on a machine with no or a handful of Zorro expansion cards. Convert it to conditional dynamic memory allocation to fix this. amiga_parse_bootinfo() still needs to store some information about the detected Zorro devices, at a time even the bootmem allocator is not yet available. This is now handled using a much smaller array (typically less than 0.5 KiB), which is __initdata and thus freed later. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'include/linux/zorro.h')
-rw-r--r--include/linux/zorro.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/include/linux/zorro.h b/include/linux/zorro.h
index dff42025649b..661cbd2a86ee 100644
--- a/include/linux/zorro.h
+++ b/include/linux/zorro.h
@@ -175,7 +175,23 @@ static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
extern unsigned int zorro_num_autocon; /* # of autoconfig devices found */
-extern struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
+extern struct zorro_dev *zorro_autocon;
+
+
+ /*
+ * Minimal information about a Zorro device, passed from bootinfo
+ * Only available temporarily, i.e. until initmem has been freed!
+ */
+
+struct zorro_dev_init {
+ struct ExpansionRom rom;
+ u16 slotaddr;
+ u16 slotsize;
+ u32 boardaddr;
+ u32 boardsize;
+};
+
+extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
/*