[PATCH v2 6/6] drm/vc4: Use drm_timeout_rel_to_jiffies()

vc4_wait_bo_ioctl() converts its timeout with usecs_to_jiffies(), which
takes an unsigned int. The microsecond value derived from the u64
timeout_ns is narrowed to fit, so any timeout above UINT_MAX microseconds,
around ~71 minutes, wraps into a much shorter one. Unlike the equivalent
problem in the other drivers, this one is not limited to 32-bit.

Use the shared helper, which takes the duration in ns and clamps the
result to MAX_JIFFY_OFFSET.

Fixes: 21bd85f82ec2 ("drm/vc4: Use DMA Resv to implement VC4 wait BO IOCTL")
Signed-off-by: Maíra Canal <[email protected]>
---
 drivers/gpu/drm/vc4/vc4_gem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index e231c906709c..781aeb8967b1 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -32,6 +32,7 @@
 #include <drm/drm_exec.h>
 #include <drm/drm_print.h>
 #include <drm/drm_syncobj.h>
+#include <drm/drm_utils.h>
 
 #include "vc4_drv.h"
 #include "vc4_regs.h"
@@ -970,7 +971,7 @@ vc4_wait_bo_ioctl(struct drm_device *dev, void *data,
 	int ret;
 	struct drm_vc4_wait_bo *args = data;
 	unsigned long timeout_jiffies =
-		usecs_to_jiffies(div_u64(args->timeout_ns, 1000));
+		drm_timeout_rel_to_jiffies(args->timeout_ns);
 	ktime_t start = ktime_get();
 	u64 delta_ns;
 

-- 
2.55.0