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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-03 09:21:25 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-07-03 09:21:25 +0200
commitb9b667a0c7596474f9eb30008e837aa88574ceb7 (patch)
tree34cdf00a87171cd4030513b85e7de801385abecd /drivers/fsi
parentc1829acefc08c2f9a11e769750ea875b0a663af3 (diff)
parent371975b0b07520c85098652d561639837a60a905 (diff)
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Merge tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi into char-misc-next
Joel writes: FSI changes for 5.3 - Add MAINTAINERS entry. There is now a git tree and a mailing list/patchwork for collecting FSI patches - Bug fix for error driver registration error paths - Correction for the OCC hwmon driver to meet the spec * tag 'fsi-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi: fsi/core: Fix error paths on CFAM init OCC: FSI and hwmon: Add sequence numbering MAINTAINERS: Add FSI subsystem
Diffstat (limited to 'drivers/fsi')
-rw-r--r--drivers/fsi/fsi-core.c32
-rw-r--r--drivers/fsi/fsi-occ.c15
2 files changed, 32 insertions, 15 deletions
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 1d83f3ba478b..1f76740f33b6 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -1029,6 +1029,14 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
}
+ rc = fsi_slave_set_smode(slave);
+ if (rc) {
+ dev_warn(&master->dev,
+ "can't set smode on slave:%02x:%02x %d\n",
+ link, id, rc);
+ goto err_free;
+ }
+
/* Allocate a minor in the FSI space */
rc = __fsi_get_new_minor(slave, fsi_dev_cfam, &slave->dev.devt,
&slave->cdev_idx);
@@ -1040,17 +1048,14 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
rc = cdev_device_add(&slave->cdev, &slave->dev);
if (rc) {
dev_err(&slave->dev, "Error %d creating slave device\n", rc);
- goto err_free;
+ goto err_free_ida;
}
- rc = fsi_slave_set_smode(slave);
- if (rc) {
- dev_warn(&master->dev,
- "can't set smode on slave:%02x:%02x %d\n",
- link, id, rc);
- kfree(slave);
- return -ENODEV;
- }
+ /* Now that we have the cdev registered with the core, any fatal
+ * failures beyond this point will need to clean up through
+ * cdev_device_del(). Fortunately though, nothing past here is fatal.
+ */
+
if (master->link_config)
master->link_config(master, link,
slave->t_send_delay,
@@ -1067,10 +1072,13 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
dev_dbg(&master->dev, "failed during slave scan with: %d\n",
rc);
- return rc;
+ return 0;
- err_free:
- put_device(&slave->dev);
+err_free_ida:
+ fsi_free_minor(slave->dev.devt);
+err_free:
+ of_node_put(slave->dev.of_node);
+ kfree(slave);
return rc;
}
diff --git a/drivers/fsi/fsi-occ.c b/drivers/fsi/fsi-occ.c
index a2301cea1cbb..7da9c81759ac 100644
--- a/drivers/fsi/fsi-occ.c
+++ b/drivers/fsi/fsi-occ.c
@@ -412,6 +412,7 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
msecs_to_jiffies(OCC_CMD_IN_PRG_WAIT_MS);
struct occ *occ = dev_get_drvdata(dev);
struct occ_response *resp = response;
+ u8 seq_no;
u16 resp_data_length;
unsigned long start;
int rc;
@@ -426,6 +427,8 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
mutex_lock(&occ->occ_lock);
+ /* Extract the seq_no from the command (first byte) */
+ seq_no = *(const u8 *)request;
rc = occ_putsram(occ, OCC_SRAM_CMD_ADDR, request, req_len);
if (rc)
goto done;
@@ -441,11 +444,17 @@ int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
if (rc)
goto done;
- if (resp->return_status == OCC_RESP_CMD_IN_PRG) {
+ if (resp->return_status == OCC_RESP_CMD_IN_PRG ||
+ resp->seq_no != seq_no) {
rc = -ETIMEDOUT;
- if (time_after(jiffies, start + timeout))
- break;
+ if (time_after(jiffies, start + timeout)) {
+ dev_err(occ->dev, "resp timeout status=%02x "
+ "resp seq_no=%d our seq_no=%d\n",
+ resp->return_status, resp->seq_no,
+ seq_no);
+ goto done;
+ }
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(wait_time);