debugfs: add missing #ifdef HAS_IOMEM
"debugfs: add tools to printk 32-bit registers" adds new functions which rely
on IOMEM functionality which is not present on all architectures and therefore
result in compile errors:
fs/debugfs/file.c: In function 'debugfs_print_regs32':
fs/debugfs/file.c:561:7: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]
Add an #ifdef CONFIG_HAS_IOMEM to fix this
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 989f07f..ea62afa 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -528,6 +528,8 @@
}
EXPORT_SYMBOL_GPL(debugfs_create_blob);
+#ifdef CONFIG_HAS_IOMEM
+
/*
* The regset32 stuff is used to print 32-bit registers using the
* seq_file utilities. We offer printing a register set in an already-opened
@@ -616,3 +618,5 @@
return debugfs_create_file(name, mode, parent, regset, &fops_regset32);
}
EXPORT_SYMBOL_GPL(debugfs_create_regset32);
+
+#endif /* CONFIG_HAS_IOMEM */