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| author | Jason Gunthorpe <jgg@nvidia.com> | 2021-08-30 15:49:59 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-08-30 15:49:59 +0300 |
| commit | 6a217437f9f5482a3f6f2dc5fcd27cf0f62409ac (patch) | |
| tree | c82270181daeb43eb9984b586784b70f13ef1df4 /drivers/pinctrl/sunxi/pinctrl-sunxi.c | |
| parent | 65f90c8e38c9900692338864156e7824cf8a6501 (diff) | |
| parent | 79fbd3e1241cea83dded06db2b8bcd5893d877d7 (diff) | |
| download | linux-6a217437f9f5482a3f6f2dc5fcd27cf0f62409ac.tar.xz | |
Merge branch 'sg_nents' into rdma.git for-next
From Maor Gottlieb
====================
Fix the use of nents and orig_nents in the sg table append helpers. The
nents should be used by the DMA layer to store the number of DMA mapped
sges, the orig_nents is the number of CPU sges.
Since the sg append logic doesn't always create a SGL with exactly
orig_nents entries store a total_nents as well to allow the table to be
properly free'd and reorganize the freeing logic to share across all the
use cases.
====================
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
* 'sg_nents':
RDMA: Use the sg_table directly and remove the opencoded version from umem
lib/scatterlist: Fix wrong update of orig_nents
lib/scatterlist: Provide a dedicated function to support table append
Diffstat (limited to 'drivers/pinctrl/sunxi/pinctrl-sunxi.c')
| -rw-r--r-- | drivers/pinctrl/sunxi/pinctrl-sunxi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index dc8d39ae045b..9c7679c06dca 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -1219,10 +1219,12 @@ static int sunxi_pinctrl_build_state(struct platform_device *pdev) } /* - * We suppose that we won't have any more functions than pins, - * we'll reallocate that later anyway + * Find an upper bound for the maximum number of functions: in + * the worst case we have gpio_in, gpio_out, irq and up to four + * special functions per pin, plus one entry for the sentinel. + * We'll reallocate that later anyway. */ - pctl->functions = kcalloc(pctl->ngroups, + pctl->functions = kcalloc(4 * pctl->ngroups + 4, sizeof(*pctl->functions), GFP_KERNEL); if (!pctl->functions) |