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Revision fea20995976f4b2e8968f852a18e280487d42f0d authored by Paul Kocialkowski on 10 July 2017, 19:33:05 UTC, committed by Thierry Reding on 27 July 2017, 14:57:34 UTC 
gpu: host1x: Free the IOMMU domain when there is no device to attach
 
When there is no device to attach to the IOMMU domain, as may be the
case when the device-tree does not contain the proper iommu node, it is
best to keep going without IOMMU support rather than failing.
This allows the driver to probe and function instead of taking down
all of the tegra drm driver, leading to missing display support.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support")
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170710193305.5987-1-contact@paulk.fr
1 parent b9670ca
Raw File
ver_linux 
#!/usr/bin/awk -f
# Before running this script please ensure that your PATH is
# typical as you use for compilation/installation. I use
# /bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may
# differ on your system.

BEGIN {
	usage = "If some fields are empty or look unusual you may have an old version.\n"
	usage = usage "Compare to the current minimal requirements in Documentation/Changes.\n"
	print usage

	system("uname -a")
	printf("\n")

	printversion("GNU C", version("gcc -dumpversion 2>&1"))
	printversion("GNU Make", version("make --version 2>&1"))
	printversion("Binutils", version("ld -v 2>&1"))
	printversion("Util-linux", version("mount --version 2>&1"))
	printversion("Mount", version("mount --version 2>&1"))
	printversion("Module-init-tools", version("depmod -V  2>&1"))
	printversion("E2fsprogs", version("tune2fs 2>&1"))
	printversion("Jfsutils", version("fsck.jfs -V 2>&1"))
	printversion("Reiserfsprogs", version("reiserfsck -V 2>&1"))
	printversion("Reiser4fsprogs", version("fsck.reiser4 -V 2>&1"))
	printversion("Xfsprogs", version("xfs_db -V 2>&1"))
	printversion("Pcmciautils", version("pccardctl -V 2>&1"))
	printversion("Pcmcia-cs", version("cardmgr -V 2>&1"))
	printversion("Quota-tools", version("quota -V 2>&1"))
	printversion("PPP", version("pppd --version 2>&1"))
	printversion("Isdn4k-utils", version("isdnctrl 2>&1"))
	printversion("Nfs-utils", version("showmount --version 2>&1"))

	if (system("test -r /proc/self/maps") == 0) {
		while (getline <"/proc/self/maps" > 0) {
			n = split($0, procmaps, "/")
			if (/libc.*so$/ && match(procmaps[n], /[0-9]+([.]?[0-9]+)+/)) {
				ver = substr(procmaps[n], RSTART, RLENGTH)
				printversion("Linux C Library", ver)
				break
			}
		}
	}

	printversion("Dynamic linker (ldd)", version("ldd --version 2>&1"))

	while ("ldconfig -p 2>/dev/null" | getline > 0) {
		if (/(libg|stdc)[+]+\.so/) {
			libcpp = $NF
			break
		}
	}
	if (system("test -r " libcpp) == 0)
		printversion("Linux C++ Library", version("readlink " libcpp))

	printversion("Procps", version("ps --version 2>&1"))
	printversion("Net-tools", version("ifconfig --version 2>&1"))
	printversion("Kbd", version("loadkeys -V 2>&1"))
	printversion("Console-tools", version("loadkeys -V 2>&1"))
	printversion("Oprofile", version("oprofiled --version 2>&1"))
	printversion("Sh-utils", version("expr --v 2>&1"))
	printversion("Udev", version("udevadm --version 2>&1"))
	printversion("Wireless-tools", version("iwconfig --version 2>&1"))

	if (system("test -r /proc/modules") == 0) {
		while ("sort /proc/modules" | getline > 0) {
			mods = mods sep $1
			sep = " "
		}
		printversion("Modules Loaded", mods)
	}
}

function version(cmd,    ver) {
	while (cmd | getline > 0) {
		if (!/ver_linux/ && match($0, /[0-9]+([.]?[0-9]+)+/)) {
			ver = substr($0, RSTART, RLENGTH)
			break
		}
	}
	close(cmd)
	return ver
}

function printversion(name, value,  ofmt) {
	if (value != "") {
		ofmt = "%-20s\t%s\n"
		printf(ofmt, name, value)
	}
}
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