linux

Paul Parsons d63fcea91f drm/radeon: Fix PCIe lane width calculation commit `85e290d92b` upstream. Two years ago I tried an AMD Radeon E8860 embedded GPU with the drm driver. The dmesg output included driver warnings about an invalid PCIe lane width. Tracking the problem back led to si_set_pcie_lane_width_in_smc(). The calculation of the lane widths via ATOM_PPLIB_PCIE_LINK_WIDTH_MASK and ATOM_PPLIB_PCIE_LINK_WIDTH_SHIFT macros did not increment the resulting value, per the comment in pptable.h ("lanes - 1"), and per usage elsewhere. Applying the increment silenced the warnings. The code has not changed since, so either my analysis was incorrect or the bug has gone unnoticed. Hence submitting this as an RFC. Acked-by: Christian König <christian.koenig@amd.com> Acked-by: Chunming Zhou <david1.zhou@amd.com> Signed-off-by: Paul Parsons <lost.distance@yahoo.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>		History 2018-10-21 08:45:10 +01:00
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drm	drm/radeon: Fix PCIe lane width calculation	2018-10-21 08:45:10 +01:00
host1x	gpu: host1x: Rename internal functions for clarity	2014-06-05 23:10:30 +02:00
ipu-v3	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2014-06-12 11:32:30 -07:00
vga	vgaarb: fix signal handling in vga_get()	2016-01-18 22:27:27 +00:00
Makefile	gpu: ipu-v3: Move i.MX IPUv3 core driver out of staging	2014-06-04 11:06:52 +02:00