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ptp_qoriq: don't pass a large struct by value but instead pass it by reference

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Passing the struct ptp_clock_info caps by parameter is passing over 130 bytes
of data by value on the stack. Optimize this by passing it by reference instead.
Also shinks the object code size:

Before:
   text	   data	    bss	    dec	    hex	filename
  12596	   2160	     64	  14820	   39e4	drivers/ptp/ptp_qoriq.o

After:
   text	   data	    bss	    dec	    hex	filename
  12567	   2160	     64	  14791	   39c7	drivers/ptp/ptp_qoriq.o

Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Colin Ian King 2019-02-19 14:21:20 +00:00 • committed by David S. Miller
commit 58066ac9d7
3 changed files with 5 additions and 5 deletions
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6
drivers/ptp/ptp_qoriq.c
View file

@ -459,7 +459,7 @@ static int ptp_qoriq_auto_config(struct ptp_qoriq *ptp_qoriq,
}
int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
const struct ptp_clock_info caps)
const struct ptp_clock_info *caps)
{
struct device_node *node = ptp_qoriq->dev->of_node;
struct ptp_qoriq_registers *regs;
@ -468,7 +468,7 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
u32 tmr_ctrl;
ptp_qoriq->base = base;
ptp_qoriq->caps = caps;
ptp_qoriq->caps = *caps;
if (of_property_read_u32(node, "fsl,cksel", &ptp_qoriq->cksel))
ptp_qoriq->cksel = DEFAULT_CKSEL;
@ -605,7 +605,7 @@ static int ptp_qoriq_probe(struct platform_device *dev)
goto no_ioremap;
}
err = ptp_qoriq_init(ptp_qoriq, base, ptp_qoriq_caps);
err = ptp_qoriq_init(ptp_qoriq, base, &ptp_qoriq_caps);
if (err)
goto no_clock;