[Letux-kernel] LetuxOS: Kernel: m-stable 5.4.77 successful

[Andreas Kemnade]

On Mon, 16 Nov 2020 15:20:24 +0100 (CET)
hns at goldelico.com (H. Nikolaus Schaller) wrote:

> KVERSION: v5.4.77 - http://www.kernel.org
> CONFIGS:  arch/arm/configs/letux_defconfig arch/arm/configs/letux_lpae_defconfig arch/mips/configs/letux_defconfig
> 
does not compile here
  CC [M]  drivers/gpu/drm/omapdrm/omap_gem.o
/home/andi/kernel/drivers/gpu/drm/omapdrm/omap_gem.c: In function ‘_omap_gem_unpin’:
/home/andi/kernel/drivers/gpu/drm/omapdrm/omap_gem.c:886:28: error: passing argument 1 of ‘refcount_dec_and_test_checked’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  if (refcount_dec_and_test(&omap_obj->dma_addr_cnt)) {
                            ^~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/andi/kernel/include/linux/kref.h:17,
                 from /home/andi/kernel/include/linux/kobject.h:23,
                 from /home/andi/kernel/include/linux/device.h:16,
                 from /home/andi/kernel/include/linux/dma-mapping.h:7,
                 from /home/andi/kernel/drivers/gpu/drm/omapdrm/omap_gem.c:7:
/home/andi/kernel/include/linux/refcount.h:54:68: note: expected ‘refcount_t *’ {aka ‘struct refcount_struct *’} but argument is of type ‘u32 *’ {aka ‘unsigned int *’}
 extern __must_check bool refcount_dec_and_test_checked(refcount_t *r);
                                                        ~~~~~~~~~~~~^
cc1: some warnings being treated as errors

git blame:
commit a882ed5f130ce0d467944a5d0a4d1e7259d815af
Author: Matthijs van Duin <matthijsvanduin at gmail.com>
Date:   Fri Jun 19 16:34:41 2020 +0100

    omapdrm: Use sg_table for dmabufs to enable width != 8192
    
    This fixes cases other than width=8k/stride=32k by using a proper
    sg_table with multiple entries for dmabufs, mapping each line
    to its correct TILER address.
    
    Original-by: Matthijs van Duin <matthijsvanduin at gmail.com>
    Signed-off-by: David Shah <dave at ds0.me>

Hmm, letux-5.9 compiles, so any dangerous cherry-picking here?!

Regards,
Andreas