[bug report] phy: freescale: fsl-samsung-hdmi: Support dynamic integer

[Dan Carpenter]

Hello Adam Ford,

Commit 1951dbb41d1d ("phy: freescale: fsl-samsung-hdmi: Support
dynamic integer") from Sep 14, 2024 (linux-next), leads to the
following Smatch static checker warning:

	drivers/phy/freescale/phy-fsl-samsung-hdmi.c:510 fsl_samsung_hdmi_phy_lookup_rate()
	error: iterator underflow 'phy_pll_cfg' (-1)-69

drivers/phy/freescale/phy-fsl-samsung-hdmi.c
    501 static const struct phy_config *fsl_samsung_hdmi_phy_lookup_rate(unsigned long rate)
    502 {
    503         int i;
    504 
    505         /* Search the lookup table */
    506         for (i = ARRAY_SIZE(phy_pll_cfg) - 1; i >= 0; i--)
                                                      ^^^^^^
What about if we just made the condition "i > 0" here and defaulted to the first
element in the array?

    507                 if (phy_pll_cfg[i].pixclk <= rate)
    508                         break;
    509 
--> 510         return &phy_pll_cfg[i];

Or another idea could but the check for if (i == -1) at the end of the loop.

    511 }

regards,
dan carpenter