soundwire: optimize sdw_dp0_prop

Move pointers and booleans.

Before:

struct sdw_dp0_prop {
	u32                        max_word;             /*     0     4 */
	u32                        min_word;             /*     4     4 */
	u32                        num_words;            /*     8     4 */

	/* XXX 4 bytes hole, try to pack */

	u32 *                      words;                /*    16     8 */
	bool                       BRA_flow_controlled;  /*    24     1 */
	bool                       simple_ch_prep_sm;    /*    25     1 */

	/* XXX 2 bytes hole, try to pack */

	u32                        ch_prep_timeout;      /*    28     4 */
	bool                       imp_def_interrupts;   /*    32     1 */

	/* size: 40, cachelines: 1, members: 8 */
	/* sum members: 27, holes: 2, sum holes: 6 */
	/* padding: 7 */
	/* last cacheline: 40 bytes */
};

after:

struct sdw_dp0_prop {
	u32 *                      words;                /*     0     8 */
	u32                        max_word;             /*     8     4 */
	u32                        min_word;             /*    12     4 */
	u32                        num_words;            /*    16     4 */
	u32                        ch_prep_timeout;      /*    20     4 */
	bool                       BRA_flow_controlled;  /*    24     1 */
	bool                       simple_ch_prep_sm;    /*    25     1 */
	bool                       imp_def_interrupts;   /*    26     1 */

	/* size: 32, cachelines: 1, members: 8 */
	/* padding: 5 */
	/* last cacheline: 32 bytes */
};

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Bard Liao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: plbossart

include/linux/soundwire/sdw.h

@@ -226,16 +226,16 @@ enum sdw_clk_stop_mode {
 
 /**
  * struct sdw_dp0_prop - DP0 properties
+ * @words: wordlengths supported
  * @max_word: Maximum number of bits in a Payload Channel Sample, 1 to 64
  * (inclusive)
  * @min_word: Minimum number of bits in a Payload Channel Sample, 1 to 64
  * (inclusive)
  * @num_words: number of wordlengths supported
- * @words: wordlengths supported
+ * @ch_prep_timeout: Port-specific timeout value, in milliseconds
  * @BRA_flow_controlled: Slave implementation results in an OK_NotReady
  * response
  * @simple_ch_prep_sm: If channel prepare sequence is required
- * @ch_prep_timeout: Port-specific timeout value, in milliseconds
  * @imp_def_interrupts: If set, each bit corresponds to support for
  * implementation-defined interrupts
  *
@@ -244,13 +244,13 @@ enum sdw_clk_stop_mode {
  * support
  */
 struct sdw_dp0_prop {
+	u32 *words;
 	u32 max_word;
 	u32 min_word;
 	u32 num_words;
-	u32 *words;
+	u32 ch_prep_timeout;
 	bool BRA_flow_controlled;
 	bool simple_ch_prep_sm;
-	u32 ch_prep_timeout;
 	bool imp_def_interrupts;
 };