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-rw-r--r--drivers/sbus/char/Kconfig3
-rw-r--r--drivers/sbus/char/oradax.c2
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/sbus/char/Kconfig b/drivers/sbus/char/Kconfig
index a785aa7660c3..bf3c5f735614 100644
--- a/drivers/sbus/char/Kconfig
+++ b/drivers/sbus/char/Kconfig
@@ -72,7 +72,8 @@ config DISPLAY7SEG
config ORACLE_DAX
tristate "Oracle Data Analytics Accelerator"
- default m if SPARC64
+ depends on SPARC64
+ default m
help
Driver for Oracle Data Analytics Accelerator, which is
a coprocessor that performs database operations in hardware.
diff --git a/drivers/sbus/char/oradax.c b/drivers/sbus/char/oradax.c
index 03dc04739225..c44d7c7ffc92 100644
--- a/drivers/sbus/char/oradax.c
+++ b/drivers/sbus/char/oradax.c
@@ -880,7 +880,7 @@ static int dax_ccb_exec(struct dax_ctx *ctx, const char __user *buf,
dax_dbg("args: ccb_buf_len=%ld, idx=%d", count, idx);
/* for given index and length, verify ca_buf range exists */
- if (idx + nccbs >= DAX_CA_ELEMS) {
+ if (idx < 0 || idx > (DAX_CA_ELEMS - nccbs)) {
ctx->result.exec.status = DAX_SUBMIT_ERR_NO_CA_AVAIL;
return 0;
}