On Sun, Feb 28, 2016 at 11:42 PM, Andrea Adami <[email protected]> wrote: > Revert Yocto-specific : "check console device file on fs when booting". > Fix kernel panic at boot because of the missing /dev/console. > > Signed-off-by: Andrea Adami <[email protected]> > --- > .../revert-check-console.patch | 47 > ++++++++++++++++++++++ > .../linux/linux-yocto-tiny-kexecboot_4.4.bb | 2 + > 2 files changed, 49 insertions(+) > create mode 100644 > meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot/revert-check-console.patch > > diff --git > a/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot/revert-check-console.patch > > b/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot/revert-check-console.patch > new file mode 100644 > index 0000000..5e5e8d9 > --- /dev/null > +++ > b/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot/revert-check-console.patch > @@ -0,0 +1,47 @@ > +From a74e0bf51adcc867b73fc44050eb9bde985c9cba Mon Sep 17 00:00:00 2001 > +From: Andrea Adami <[email protected]> > +Date: Sun, 28 Feb 2016 01:09:19 +0100 > +Subject: [PATCH] main.c: revert check on console device > + > +Fix kernel panic because of the missing /dev/console. > + > +Revert Yocto-specific : "check console device file on fs when booting". > + > +The initramfs used in this kernel needs to be of the smallest possible > +size so we save a few kb by deploying an empty /dev which is populated > +after boot by the init (kexecboot checks and recreates the devices > +with or without devtmpfs). > + > +Signed-off-by: Andrea Adami <[email protected]> > +--- > + init/main.c | 7 ------- > + 1 file changed, 7 deletions(-) > + > +diff --git a/init/main.c b/init/main.c > +index d191d2a..9e64d70 100644 > +--- a/init/main.c > ++++ b/init/main.c > +@@ -976,7 +976,6 @@ static int __ref kernel_init(void *unused) > + > + static noinline void __init kernel_init_freeable(void) > + { > +- struct stat console_stat; > + /* > + * Wait until kthreadd is all set-up. > + */ > +@@ -1008,12 +1007,6 @@ static noinline void __init kernel_init_freeable(void) > + > + do_basic_setup(); > + > +- /* Use /dev/console to infer if the rootfs is setup properly */ > +- if (sys_newlstat((char __user *) "/dev/console", (struct stat __user > *) &console_stat) > +- || !S_ISCHR(console_stat.st_mode)) { > +- panic("/dev/console is missing or not a character > device!\nPlease ensure your rootfs is properly configured\n"); > +- } > +- > + /* Open the /dev/console on the rootfs, this should never fail */ > + if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) > + pr_err("Warning: unable to open an initial console.\n"); > +-- > +1.9.1 > + > diff --git > a/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot_4.4.bb > b/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot_4.4.bb > index e6c6d9d..e3c7144 100644 > --- a/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot_4.4.bb > +++ b/meta-initramfs/recipes-kernel/linux/linux-yocto-tiny-kexecboot_4.4.bb > @@ -1,6 +1,8 @@ > require recipes-kernel/linux/linux-yocto-tiny_${PV}.bb > SUMMARY = "Yocto tiny kernel embedding a minimalistic kexecboot initramfs" > > +SRC_URI += "file://revert-check-on-console-device.patch" > + > PACKAGES = "" > PROVIDES = "" > > -- > 1.9.1 >
Please ignore this one. Missing rename...sob V2 following Sorry Andrea -- _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-devel
