From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/parport/daisy.c | 69 +++++++++++++++++++++++-----------
1 files changed, 47 insertions(+), 22 deletions(-)
diff --git a/kernel/drivers/parport/daisy.c b/kernel/drivers/parport/daisy.c
index 5484a46..6d78ec3 100644
--- a/kernel/drivers/parport/daisy.c
+++ b/kernel/drivers/parport/daisy.c
@@ -30,12 +30,6 @@
#undef DEBUG
-#ifdef DEBUG
-#define DPRINTK(stuff...) printk(stuff)
-#else
-#define DPRINTK(stuff...)
-#endif
-
static struct daisydev {
struct daisydev *next;
struct parport *port;
@@ -45,6 +39,7 @@
static DEFINE_SPINLOCK(topology_lock);
static int numdevs;
+static bool daisy_init_done;
/* Forward-declaration of lower-level functions. */
static int mux_present(struct parport *port);
@@ -87,6 +82,24 @@
return extra;
}
+static int daisy_drv_probe(struct pardevice *par_dev)
+{
+ struct device_driver *drv = par_dev->dev.driver;
+
+ if (strcmp(drv->name, "daisy_drv"))
+ return -ENODEV;
+ if (strcmp(par_dev->name, daisy_dev_name))
+ return -ENODEV;
+
+ return 0;
+}
+
+static struct parport_driver daisy_driver = {
+ .name = "daisy_drv",
+ .probe = daisy_drv_probe,
+ .devmodel = true,
+};
+
/* Discover the IEEE1284.3 topology on a port -- muxes and daisy chains.
* Return value is number of devices actually detected. */
int parport_daisy_init(struct parport *port)
@@ -97,6 +110,23 @@
int num_ports;
int i;
int last_try = 0;
+
+ if (!daisy_init_done) {
+ /*
+ * flag should be marked true first as
+ * parport_register_driver() might try to load the low
+ * level driver which will lead to announcing new ports
+ * and which will again come back here at
+ * parport_daisy_init()
+ */
+ daisy_init_done = true;
+ i = parport_register_driver(&daisy_driver);
+ if (i) {
+ pr_err("daisy registration failed\n");
+ daisy_init_done = false;
+ return i;
+ }
+ }
again:
/* Because this is called before any other devices exist,
@@ -109,8 +139,7 @@
((num_ports = num_mux_ports(port)) == 2 || num_ports == 4)) {
/* Leave original as port zero. */
port->muxport = 0;
- printk(KERN_INFO
- "%s: 1st (default) port of %d-way multiplexor\n",
+ pr_info("%s: 1st (default) port of %d-way multiplexor\n",
port->name, num_ports);
for (i = 1; i < num_ports; i++) {
/* Clone the port. */
@@ -123,8 +152,7 @@
continue;
}
- printk(KERN_INFO
- "%s: %d%s port of %d-way multiplexor on %s\n",
+ pr_info("%s: %d%s port of %d-way multiplexor on %s\n",
extra->name, i + 1, th[i + 1], num_ports,
port->name);
@@ -213,10 +241,12 @@
struct pardevice *parport_open(int devnum, const char *name)
{
struct daisydev *p = topology;
+ struct pardev_cb par_cb;
struct parport *port;
struct pardevice *dev;
int daisy;
+ memset(&par_cb, 0, sizeof(par_cb));
spin_lock(&topology_lock);
while (p && p->devnum != devnum)
p = p->next;
@@ -230,7 +260,7 @@
port = parport_get_port(p->port);
spin_unlock(&topology_lock);
- dev = parport_register_device(port, name, NULL, NULL, NULL, 0, NULL);
+ dev = parport_register_dev_model(port, name, &par_cb, devnum);
parport_put_port(port);
if (!dev)
return NULL;
@@ -285,8 +315,7 @@
| PARPORT_STATUS_PAPEROUT
| PARPORT_STATUS_SELECT
| PARPORT_STATUS_ERROR)) {
- DPRINTK(KERN_DEBUG "%s: cpp_daisy: aa5500ff(%02x)\n",
- port->name, s);
+ pr_debug("%s: cpp_daisy: aa5500ff(%02x)\n", port->name, s);
return -ENXIO;
}
@@ -296,8 +325,7 @@
| PARPORT_STATUS_SELECT
| PARPORT_STATUS_ERROR);
if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
- DPRINTK(KERN_DEBUG "%s: cpp_daisy: aa5500ff87(%02x)\n",
- port->name, s);
+ pr_debug("%s: cpp_daisy: aa5500ff87(%02x)\n", port->name, s);
return -ENXIO;
}
@@ -332,7 +360,7 @@
s = parport_read_status(port);
if (!(s & PARPORT_STATUS_ACK)) {
- DPRINTK(KERN_DEBUG "%s: cpp_mux: aa55f00f52ad%02x(%02x)\n",
+ pr_debug("%s: cpp_mux: aa55f00f52ad%02x(%02x)\n",
port->name, cmd, s);
return -EIO;
}
@@ -418,8 +446,7 @@
| PARPORT_STATUS_PAPEROUT
| PARPORT_STATUS_SELECT
| PARPORT_STATUS_ERROR)) {
- DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff(%02x)\n",
- port->name, s);
+ pr_debug("%s: assign_addrs: aa5500ff(%02x)\n", port->name, s);
return 0;
}
@@ -429,8 +456,7 @@
| PARPORT_STATUS_SELECT
| PARPORT_STATUS_ERROR);
if (s != (PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR)) {
- DPRINTK(KERN_DEBUG "%s: assign_addrs: aa5500ff87(%02x)\n",
- port->name, s);
+ pr_debug("%s: assign_addrs: aa5500ff87(%02x)\n", port->name, s);
return 0;
}
@@ -467,8 +493,7 @@
parport_write_data(port, 0xff); udelay(2);
detected = numdevs - thisdev;
- DPRINTK(KERN_DEBUG "%s: Found %d daisy-chained devices\n", port->name,
- detected);
+ pr_debug("%s: Found %d daisy-chained devices\n", port->name, detected);
/* Ask the new devices to introduce themselves. */
deviceid = kmalloc(1024, GFP_KERNEL);
--
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