From: Jiyu Yang <jiyu.yang@amlogic.com>
Date: Mon, 22 Oct 2018 07:21:58 +0000 (+0800)
Subject: gpu: add 32bit kernel support [1/1]
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=546aaec970845731fd8063048b6e2ddb0a428e04;p=GitHub%2FLineageOS%2FG12%2Fandroid_hardware_amlogic_kernel-modules_mali-driver.git

gpu: add 32bit kernel support [1/1]

PD#SWPL-684

Problem:
the 32 bit kernel can't work

Solution:
introduce FMODE_UNSIGNED_OFFSET to allow negative file offsets

Verify:
run on the u212, which can boot into home.

Change-Id: I9af133e945911c5f4287c9a566ea38524f665dab
Signed-off-by: Jiyu Yang <Jiyu.Yang@amlogic.com>
---

diff --git a/bifrost/r10p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c b/bifrost/r10p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
index 22c995a..3c9c806 100644
--- a/bifrost/r10p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
+++ b/bifrost/r10p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
@@ -401,6 +401,7 @@ static int kbase_open(struct inode *inode, struct file *filp)
 
 	init_waitqueue_head(&kctx->event_queue);
 	filp->private_data = kctx;
+	filp->f_mode |= FMODE_UNSIGNED_OFFSET;
 	kctx->filp = filp;
 
 	if (kbdev->infinite_cache_active_default)
diff --git a/bifrost/r9p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c b/bifrost/r9p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
index a6b0ac7..c776e08 100644
--- a/bifrost/r9p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
+++ b/bifrost/r9p0/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
@@ -359,6 +359,7 @@ static int kbase_open(struct inode *inode, struct file *filp)
 
 	init_waitqueue_head(&kctx->event_queue);
 	filp->private_data = kctx;
+	filp->f_mode |= FMODE_UNSIGNED_OFFSET;
 	kctx->filp = filp;
 
 	if (kbdev->infinite_cache_active_default)
diff --git a/dvalin/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c b/dvalin/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
index d696b40..772b993 100755
--- a/dvalin/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
+++ b/dvalin/kernel/drivers/gpu/arm/midgard/mali_kbase_core_linux.c
@@ -407,6 +407,7 @@ static int kbase_open(struct inode *inode, struct file *filp)
 
 	init_waitqueue_head(&kctx->event_queue);
 	filp->private_data = kctx;
+	filp->f_mode |= FMODE_UNSIGNED_OFFSET;
 	kctx->filp = filp;
 
 	if (kbdev->infinite_cache_active_default)