From 42954857190b9df16d9d873ecc7f6cc38e013e44 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 9 Jul 2019 20:32:28 +0200 Subject: brcm2708: add linux 4.19 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709) Signed-off-by: Álvaro Fernández Rojas --- ...-0317-char-vcio-Add-compat-ioctl-handling.patch | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0317-char-vcio-Add-compat-ioctl-handling.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0317-char-vcio-Add-compat-ioctl-handling.patch') diff --git a/target/linux/brcm2708/patches-4.19/950-0317-char-vcio-Add-compat-ioctl-handling.patch b/target/linux/brcm2708/patches-4.19/950-0317-char-vcio-Add-compat-ioctl-handling.patch new file mode 100644 index 0000000000..8d6bf4a1ca --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0317-char-vcio-Add-compat-ioctl-handling.patch @@ -0,0 +1,58 @@ +From ee233473783f700db1c795d8114facae23ed776b Mon Sep 17 00:00:00 2001 +From: Dave Stevenson +Date: Thu, 24 Jan 2019 13:56:30 +0000 +Subject: [PATCH 317/703] char: vcio: Add compat ioctl handling + +There was no compat ioctl handler, so 32 bit userspace on a +64 bit kernel failed as IOCTL_MBOX_PROPERTY used the size +of char*. + +Signed-off-by: Dave Stevenson +--- + drivers/char/broadcom/vcio.c | 22 +++++++++++++++++++++- + 1 file changed, 21 insertions(+), 1 deletion(-) + +--- a/drivers/char/broadcom/vcio.c ++++ b/drivers/char/broadcom/vcio.c +@@ -24,6 +24,9 @@ + + #define VCIO_IOC_MAGIC 100 + #define IOCTL_MBOX_PROPERTY _IOWR(VCIO_IOC_MAGIC, 0, char *) ++#ifdef CONFIG_COMPAT ++#define IOCTL_MBOX_PROPERTY32 _IOWR(VCIO_IOC_MAGIC, 0, compat_uptr_t) ++#endif + + static struct { + dev_t devt; +@@ -87,13 +90,30 @@ static long vcio_device_ioctl(struct fil + case IOCTL_MBOX_PROPERTY: + return vcio_user_property_list((void *)ioctl_param); + default: +- pr_err("unknown ioctl: %d\n", ioctl_num); ++ pr_err("unknown ioctl: %x\n", ioctl_num); + return -EINVAL; + } + } + ++#ifdef CONFIG_COMPAT ++static long vcio_device_compat_ioctl(struct file *file, unsigned int ioctl_num, ++ unsigned long ioctl_param) ++{ ++ switch (ioctl_num) { ++ case IOCTL_MBOX_PROPERTY32: ++ return vcio_user_property_list(compat_ptr(ioctl_param)); ++ default: ++ pr_err("unknown ioctl: %x\n", ioctl_num); ++ return -EINVAL; ++ } ++} ++#endif ++ + const struct file_operations vcio_fops = { + .unlocked_ioctl = vcio_device_ioctl, ++#ifdef CONFIG_COMPAT ++ .compat_ioctl = vcio_device_compat_ioctl, ++#endif + .open = vcio_device_open, + .release = vcio_device_release, + }; -- cgit v1.2.3