From: Tom Knot <tomasknot@gmail.com>
Date: Wed, 16 May 2018 12:11:54 +0000 (+0200)
Subject: Switched fast_io off, as it could cause resource starvation issues
X-Git-Url: http://git.graph-it.com/?a=commitdiff_plain;h=85ee843f2daec4020539dcdae3384181202eb100;p=graphit%2Funipi-kernel.git

Switched fast_io off, as it could cause resource starvation issues
---

diff --git a/modules/unipi/src/unipi_platform.c b/modules/unipi/src/unipi_platform.c
index 4e252a5..c4ce390 100644
--- a/modules/unipi/src/unipi_platform.c
+++ b/modules/unipi/src/unipi_platform.c
@@ -1525,7 +1525,11 @@ void neuronspi_regmap_invalidate_device(struct regmap *reg_map, struct neuronspi
 			} else {
 				switch (current_period) {
 				case NEURONSPI_REGFLAG_ACC_AFAP: {
-					regcache_drop_region(reg_map, block_start + block_counter - period_len + 1, block_start + block_counter);
+					if (regcache_drop_region(reg_map, block_start + block_counter - period_len + 1, block_start + block_counter)) {
+#if NEURONSPI_DETAILED_DEBUG > 0
+						printk(KERN_INFO "NEURONSPI: RegCache dropping failed");
+#endif
+					}
 					break;
 				}
 				case NEURONSPI_REGFLAG_ACC_10HZ: {
diff --git a/modules/unipi/src/unipi_spi.h b/modules/unipi/src/unipi_spi.h
index 83d88a7..4aa4bb8 100644
--- a/modules/unipi/src/unipi_spi.h
+++ b/modules/unipi/src/unipi_spi.h
@@ -197,7 +197,7 @@ extern struct file_operations file_ops;
 
 static const struct regmap_bus neuronspi_regmap_bus =
 {
-	.fast_io 					= 1,
+	.fast_io 					= 0,
 	.write 						= neuronspi_regmap_hw_write,
 	.gather_write 				= neuronspi_regmap_hw_gather_write,
 	.reg_write					= neuronspi_regmap_hw_reg_write,