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Message-ID: <4A40CE67.4060504@secunet.com> Date: Tue, 23 Jun 2009 14:45:27 +0200 From: Torsten Hilbrich <torsten.hilbrich@...unet.com> To: linux-kernel@...r.kernel.org CC: Dave Airlie <airlied@...ux.ie>, Zhenyu Wang <zhenyuw@...ux.intel.com> Subject: [PATCH] drm: Fixes error with gcc 3.3.5 in i915 driver. When compiling with gcc 3.3.5 I got the following error message in the module i915.ko: ERROR: "__udivdi3" [drivers/gpu/drm/i915/i915.ko] undefined! This error did not occur when compiling the same code in gcc 4.3.2. This patch replaces the 64 bit division by a call of div_u64 to avoid triggering the problem on the older compiler. The code to be fixed was introduced in commit 2c07245fb8f7f0a282282e5a9747e46defdb2cc7 --- drivers/gpu/drm/i915/intel_display.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3e1c781..306d198 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1502,7 +1502,7 @@ igdng_compute_m_n(int bytes_per_pixel, int nlanes, temp = (u64) DATA_N * pixel_clock; temp = div_u64(temp, link_clock); - m_n->gmch_m = (temp * bytes_per_pixel) / nlanes; + m_n->gmch_m = div_u64(temp * byte_per_pixel, nlanes); m_n->gmch_n = DATA_N; fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); -- 1.5.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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