From 6e3d66b80f670fdc64b9a120362a9f94b0494621 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 16 Apr 2018 11:19:24 -0700 Subject: [PATCH] uio_hv_generic: set size of ring buffer attribute The original code had ring size as a module parameter, but then it was made a fixed value. The code to set the size of the ring buffer binary file was lost in the transistion. The size is needed by user mode driver to know the size of the ring buffer. Fixes: 37b96a4931db ("uio_hv_generic: support sub-channels") Signed-off-by: Stephen Hemminger Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio_hv_generic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index f695a7e8c3145..7ff659dff11db 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -171,12 +171,12 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, return 0; } -static struct bin_attribute ring_buffer_bin_attr __ro_after_init = { +static const struct bin_attribute ring_buffer_bin_attr = { .attr = { .name = "ring", .mode = 0600, - /* size is set at init time */ }, + .size = 2 * HV_RING_SIZE * PAGE_SIZE, .mmap = hv_uio_ring_mmap, }; -- 2.39.5