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dmaengine/amba-pl08x: Remove redundant comment and rewrite original

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Similar comment is present over routine also pl08x_choose_master_bus(). Keeping
one of them. Also rewrite that comment to convey message clearly.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Viresh Kumar 2011-08-05 15:32:31 +05:30 committed by Vinod Koul
parent 5a61233073
commit 0532e6fced
1 changed files with 7 additions and 8 deletions
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15
drivers/dma/amba-pl08x.c
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@ -497,9 +497,13 @@ struct pl08x_lli_build_data {
};
/*
* Autoselect a master bus to use for the transfer this prefers the
* destination bus if both available if fixed address on one bus the
* other will be chosen
* Autoselect a master bus to use for the transfer. Slave will be the chosen as
* victim in case src & dest are not similarly aligned. i.e. If after aligning
* masters address with width requirements of transfer (by sending few byte by
* byte data), slave is still not aligned, then its width will be reduced to
* BYTE.
* - prefers the destination bus if both available
* - if fixed address on one bus the other will be chosen
*/
static void pl08x_choose_master_bus(struct pl08x_lli_build_data *bd,
struct pl08x_bus_data **mbus, struct pl08x_bus_data **sbus, u32 cctl)
@ -625,11 +629,6 @@ static int pl08x_fill_llis_for_desc(struct pl08x_driver_data *pl08x,
/* We need to count this down to zero */
bd.remainder = txd->len;
/*
* Choose bus to align to
* - prefers destination bus if both available
* - if fixed address on one bus chooses other
*/
pl08x_choose_master_bus(&bd, &mbus, &sbus, cctl);
dev_vdbg(&pl08x->adev->dev, "src=0x%08x%s/%u dst=0x%08x%s/%u len=%zu llimax=%zu\n",