drivers: i2s: Remove redundant condition check causing transfer error

When enabling the DTC (Data Transfer Controller) for the I2S SSIE driver
on Renesas RA8x2 boards, a redundant condition check prevented the
interrupt service routines from entering  during data transfer. This
caused the transfer to fail when DTC was active.

This commit removes the unnecessary condition check, allowing the DTC to
operate correctly with I2S SSIE transfers on RA8x2 devices.

Signed-off-by: Khoa Tran <[email protected]>

Author: khoatranyj

drivers/i2s/i2s_renesas_ra_ssie.c

@@ -92,13 +92,12 @@ __maybe_unused static void ssi_rt_isr(void *p_args)
 {
 	const struct device *dev = (struct device *)p_args;
 	struct renesas_ra_ssie_data *dev_data = (struct renesas_ra_ssie_data *)dev->data;
-	R_SSI0_Type *p_ssi_reg = dev_data->fsp_ctrl.p_reg;
 
-	if (p_ssi_reg->SSIFSR_b.TDE && dev_data->active_dir == I2S_DIR_TX) {
+	if (dev_data->active_dir == I2S_DIR_TX) {
 		ssi_txi_isr();
 	}
 
-	if (p_ssi_reg->SSIFSR_b.RDF && dev_data->active_dir == I2S_DIR_RX) {
+	if (dev_data->active_dir == I2S_DIR_RX) {
 		ssi_rxi_isr();
 	}
 }