Automatically release I/O permissions on shutdown
Get_io_perms() is renamed to rget_io_perms() and automatically registers
a function to release I/O permissions on shutdown.
Actually release I/O permissions on Solaris and iopl()-supporting
operating systems like Linux.
This patch fixes quite a few programmers which forgot to release I/O
permissions on shutdown, and it simplifies the shutdown and error
handling code for all others.
Do not call exit(1) if I/O permissions are denied and return an error
instead. This part of the patch was written by Niklas Söderlund.
Corresponding to flashrom svn r1551.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Niklas Söderlund <niso@kth.se>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
diff --git a/rayer_spi.c b/rayer_spi.c
index 584a6a0..8e48e6e 100644
--- a/rayer_spi.c
+++ b/rayer_spi.c
@@ -168,7 +168,8 @@
rayer_miso_bit = 4;
}
- get_io_perms();
+ if (rget_io_perms())
+ return 1;
/* Get the initial value before writing to any line. */
lpt_outbyte = INB(lpt_iobase);