Automatically unmap physmap()s

Similarly to the previous PCI self-clean up patch this one allows to get rid
of a huge number of programmer shutdown functions and makes introducing
bugs harder. It adds a new function rphysmap() that takes care of unmapping
at shutdown. Callers are changed where it makes sense.

Corresponding to flashrom svn r1714.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/it85spi.c b/it85spi.c
index 0b074eb..7efc680 100644
--- a/it85spi.c
+++ b/it85spi.c
@@ -262,6 +262,9 @@ static int it85xx_spi_common_init(struct superio s)
 	 * Major TODO here, and it will be a lot of work.
 	 */
 	base = (chipaddr)physmap("it85 communication", 0xFFFFF000, 0x1000);
+	if (base == (chipaddr)ERROR_PTR)
+		return 1;
+
 	msg_pdbg("%s():%d base=0x%08x\n", __func__, __LINE__,
 	         (unsigned int)base);
 	ce_high = (unsigned char *)(base + 0xE00);  /* 0xFFFFFE00 */