staging: r8188eu: read pwr seq length, remove PWR_CMD_END

The definitions of the power sequences are in the same file as the function
which processes them. We can simply read the number of entries in a power
sequence. There's no need for a PWR_CMD_END command to indicate the end
of a sequence.

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220704145221.159949-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/hal/HalPwrSeqCmd.c

@@ -24,11 +24,6 @@
      /*  msk: N/A */
      /*  value: N/A */
 
-#define PWR_CMD_END			0x04
-     /*  offset: N/A */
-     /*  msk: N/A */
-     /*  value: N/A */
-
 struct wl_pwr_cfg {
 	u16 offset;
 	u8 cmd:4;
@@ -50,7 +45,6 @@ static struct wl_pwr_cfg rtl8188E_power_on_flow[] = {
 	{ 0x0005, PWR_CMD_WRITE, BIT(0), BIT(0) },
 	{ 0x0005, PWR_CMD_POLLING, BIT(0), 0 },
 	{ 0x0023, PWR_CMD_WRITE, BIT(4), 0 },
-	{ 0xFFFF, PWR_CMD_END, 0, 0 },
 };
 
 static struct wl_pwr_cfg rtl8188E_card_disable_flow[] = {
@@ -63,7 +57,6 @@ static struct wl_pwr_cfg rtl8188E_card_disable_flow[] = {
 	{ 0x0007, PWR_CMD_WRITE, 0xFF, 0 }, /* enable bandgap mbias in suspend */
 	{ 0x0041, PWR_CMD_WRITE, BIT(4), 0 }, /* Clear SIC_EN register */
 	{ 0xfe10, PWR_CMD_WRITE, BIT(4), BIT(4) }, /* Set USB suspend enable local register */
-	{ 0xFFFF, PWR_CMD_END, 0, 0 },
 };
 
 /* This is used by driver for LPSRadioOff Procedure, not for FW LPS Step */
@@ -78,7 +71,6 @@ static struct wl_pwr_cfg rtl8188E_enter_lps_flow[] = {
 	{ 0x0100, PWR_CMD_WRITE, 0xFF, 0x3F }, /* Reset MAC TRX */
 	{ 0x0101, PWR_CMD_WRITE, BIT(1), 0 }, /* check if removed later */
 	{ 0x0553, PWR_CMD_WRITE, BIT(5), BIT(5) }, /* Respond TxOK to scheduler */
-	{ 0xFFFF, PWR_CMD_END, 0, 0 },
 };
 
 u8 HalPwrSeqCmdParsing(struct adapter *padapter, enum r8188eu_pwr_seq seq)
@@ -86,7 +78,7 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, enum r8188eu_pwr_seq seq)
 	struct wl_pwr_cfg pwrcfgcmd = {0};
 	struct wl_pwr_cfg *pwrseqcmd;
 	u8 poll_bit = false;
-	u32 aryidx = 0;
+	u8 idx, num_steps;
 	u8 value = 0;
 	u32 offset = 0;
 	u32 poll_count = 0; /*  polling autoload done. */
@@ -96,19 +88,22 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, enum r8188eu_pwr_seq seq)
 	switch (seq) {
 	case PWR_ON_FLOW:
 		pwrseqcmd = rtl8188E_power_on_flow;
+		num_steps = ARRAY_SIZE(rtl8188E_power_on_flow);
 		break;
 	case DISABLE_FLOW:
 		pwrseqcmd = rtl8188E_card_disable_flow;
+		num_steps = ARRAY_SIZE(rtl8188E_card_disable_flow);
 		break;
 	case LPS_ENTER_FLOW:
 		pwrseqcmd = rtl8188E_enter_lps_flow;
+		num_steps = ARRAY_SIZE(rtl8188E_enter_lps_flow);
 		break;
 	default:
 		return false;
 	}
 
-	do {
-		pwrcfgcmd = pwrseqcmd[aryidx];
+	for (idx = 0; idx < num_steps; idx++) {
+		pwrcfgcmd = pwrseqcmd[idx];
 
 		switch (GET_PWR_CFG_CMD(pwrcfgcmd)) {
 		case PWR_CMD_WRITE:
@@ -146,15 +141,9 @@ u8 HalPwrSeqCmdParsing(struct adapter *padapter, enum r8188eu_pwr_seq seq)
 		case PWR_CMD_DELAY:
 			udelay(GET_PWR_CFG_OFFSET(pwrcfgcmd));
 			break;
-		case PWR_CMD_END:
-			/*  When this command is parsed, end the process */
-			return true;
-			break;
 		default:
 			break;
 		}
-
-		aryidx++;/* Add Array Index */
-	} while (1);
+	}
 	return true;
 }