From: Marcin Mielczarczyk <[email protected]> Fix for allocation failure of logical channel when event line happens to be number 0.
Signed-off-by: Marcin Mielczarczyk <[email protected]> Signed-off-by: Linus Walleij <[email protected]> --- drivers/dma/ste_dma40.c | 15 ++++++++------- 1 files changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index ed1a05c..0ac6543 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -1043,11 +1043,11 @@ static int d40_validate_conf(struct d40_chan *d40c, } static bool d40_alloc_mask_set(struct d40_phy_res *phy, bool is_src, - int log_event_line) + int log_event_line, bool is_log) { unsigned long flags; spin_lock_irqsave(&phy->lock, flags); - if (!log_event_line) { + if (!is_log) { /* Physical interrupts are masked per physical full channel */ if (phy->allocated_src == D40_ALLOC_FREE && phy->allocated_dst == D40_ALLOC_FREE) { @@ -1165,15 +1165,16 @@ static int d40_allocate_channel(struct d40_chan *d40c) /* Find physical half channel */ for (i = 0; i < d40c->base->num_phy_chans; i++) { - if (d40_alloc_mask_set(&phys[i], is_src, 0)) + if (d40_alloc_mask_set(&phys[i], is_src, + 0, is_log)) goto found_phy; } } else for (j = 0; j < d40c->base->num_phy_chans; j += 8) { int phy_num = j + event_group * 2; for (i = phy_num; i < phy_num + 2; i++) { - if (d40_alloc_mask_set(&phys[i], - is_src, 0)) + if (d40_alloc_mask_set(&phys[i], is_src, + 0, is_log)) goto found_phy; } } @@ -1197,13 +1198,13 @@ found_phy: if (is_src) { for (i = phy_num; i < phy_num + 2; i++) { if (d40_alloc_mask_set(&phys[i], is_src, - event_line)) + event_line, is_log)) goto found_log; } } else { for (i = phy_num + 1; i >= phy_num; i--) { if (d40_alloc_mask_set(&phys[i], is_src, - event_line)) + event_line, is_log)) goto found_log; } } -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
