From: Matthew Dharm Date: Mon, 5 Dec 2005 05:58:52 +0000 (-0800) Subject: [PATCH] USB Storage: sddr09 cleanups X-Git-Tag: v2.6.16-rc1~474^2~22^2~10^2~24 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0dc08a357538de3d93305fbf99348663abdbf2cd;p=linux-2.6 [PATCH] USB Storage: sddr09 cleanups This is the second of three patches to prepare the sddr09 subdriver for conversion to the Sim-SCSI framework. This patch (as595) updates the code to use standard error values for return codes instead of our special-purpose USB_STOR_TRANSPORT_... codes. The reverse update is then needed in the transport routine, but with the Sim-SCSI framework that routine will go away. Signed-off-by: Alan Stern Acked-by: Andries Brouwer Signed-off-by: Matthew Dharm Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index 6c379b6b43..760fe9362b 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -274,8 +274,11 @@ sddr09_send_command(struct us_data *us, rc = usb_stor_ctrl_transfer(us, pipe, request, requesttype, 0, 0, xfer_data, xfer_len); - return (rc == USB_STOR_XFER_GOOD ? USB_STOR_TRANSPORT_GOOD : - USB_STOR_TRANSPORT_ERROR); + switch (rc) { + case USB_STOR_XFER_GOOD: return 0; + case USB_STOR_XFER_STALLED: return -EPIPE; + default: return -EIO; + } } static int @@ -322,20 +325,12 @@ sddr09_request_sense(struct us_data *us, unsigned char *sensebuf, int buflen) { command[4] = buflen; result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) { - US_DEBUGP("request sense failed\n"); + if (result) return result; - } result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, sensebuf, buflen, NULL); - if (result != USB_STOR_XFER_GOOD) { - US_DEBUGP("request sense bulk in failed\n"); - return USB_STOR_TRANSPORT_ERROR; - } else { - US_DEBUGP("request sense worked\n"); - return USB_STOR_TRANSPORT_GOOD; - } + return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); } /* @@ -383,7 +378,7 @@ sddr09_readX(struct us_data *us, int x, unsigned long fromaddress, result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("Result for send_control in sddr09_read2%d %d\n", x, result); return result; @@ -395,9 +390,9 @@ sddr09_readX(struct us_data *us, int x, unsigned long fromaddress, if (result != USB_STOR_XFER_GOOD) { US_DEBUGP("Result for bulk_transfer in sddr09_read2%d %d\n", x, result); - return USB_STOR_TRANSPORT_ERROR; + return -EIO; } - return USB_STOR_TRANSPORT_GOOD; + return 0; } /* @@ -511,7 +506,7 @@ sddr09_erase(struct us_data *us, unsigned long Eaddress) { result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) US_DEBUGP("Result for send_control in sddr09_erase %d\n", result); @@ -569,7 +564,7 @@ sddr09_writeX(struct us_data *us, result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("Result for send_control in sddr09_writeX %d\n", result); return result; @@ -581,9 +576,9 @@ sddr09_writeX(struct us_data *us, if (result != USB_STOR_XFER_GOOD) { US_DEBUGP("Result for bulk_transfer in sddr09_writeX %d\n", result); - return USB_STOR_TRANSPORT_ERROR; + return -EIO; } - return USB_STOR_TRANSPORT_GOOD; + return 0; } /* erase address, write same address */ @@ -647,7 +642,7 @@ sddr09_read_sg_test_only(struct us_data *us) { result = sddr09_send_scsi_command(us, command, 4*nsg+3); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("Result for send_control in sddr09_read_sg %d\n", result); return result; @@ -655,7 +650,7 @@ sddr09_read_sg_test_only(struct us_data *us) { buf = (unsigned char *) kmalloc(bulklen, GFP_NOIO); if (!buf) - return USB_STOR_TRANSPORT_ERROR; + return -ENOMEM; result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, buf, bulklen, NULL); @@ -663,10 +658,10 @@ sddr09_read_sg_test_only(struct us_data *us) { if (result != USB_STOR_XFER_GOOD) { US_DEBUGP("Result for bulk_transfer in sddr09_read_sg %d\n", result); - return USB_STOR_TRANSPORT_ERROR; + return -EIO; } - return USB_STOR_TRANSPORT_GOOD; + return 0; } #endif @@ -695,14 +690,13 @@ sddr09_read_status(struct us_data *us, unsigned char *status) { command[1] = LUNBITS; result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) return result; result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, data, 64, NULL); *status = data[0]; - return (result == USB_STOR_XFER_GOOD ? - USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); + return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); } static int @@ -725,7 +719,7 @@ sddr09_read_data(struct us_data *us, buffer = kmalloc(len, GFP_NOIO); if (buffer == NULL) { printk("sddr09_read_data: Out of memory\n"); - return USB_STOR_TRANSPORT_ERROR; + return -ENOMEM; } // Figure out the initial LBA and page @@ -736,7 +730,7 @@ sddr09_read_data(struct us_data *us, // This could be made much more efficient by checking for // contiguous LBA's. Another exercise left to the student. - result = USB_STOR_TRANSPORT_GOOD; + result = 0; index = offset = 0; while (sectors > 0) { @@ -749,7 +743,7 @@ sddr09_read_data(struct us_data *us, if (lba >= maxlba) { US_DEBUGP("Error: Requested lba %u exceeds " "maximum %u\n", lba, maxlba); - result = USB_STOR_TRANSPORT_ERROR; + result = -EIO; break; } @@ -763,7 +757,7 @@ sddr09_read_data(struct us_data *us, /* This is not really an error. It just means that the block has never been written. - Instead of returning USB_STOR_TRANSPORT_ERROR + Instead of returning an error it is better to return all zero data. */ memset(buffer, 0, len); @@ -778,7 +772,7 @@ sddr09_read_data(struct us_data *us, result = sddr09_read20(us, address>>1, pages, info->pageshift, buffer, 0); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) break; } @@ -844,7 +838,7 @@ sddr09_write_lba(struct us_data *us, unsigned int lba, pba = sddr09_find_unused_pba(info, lba); if (!pba) { printk("sddr09_write_lba: Out of unused blocks\n"); - return USB_STOR_TRANSPORT_ERROR; + return -ENOSPC; } info->pba_to_lba[pba] = lba; info->lba_to_pba[lba] = pba; @@ -855,7 +849,7 @@ sddr09_write_lba(struct us_data *us, unsigned int lba, /* Maybe it is impossible to write to PBA 1. Fake success, but don't do anything. */ printk("sddr09: avoid writing to pba 1\n"); - return USB_STOR_TRANSPORT_GOOD; + return 0; } pagelen = (1 << info->pageshift) + (1 << CONTROL_SHIFT); @@ -864,7 +858,7 @@ sddr09_write_lba(struct us_data *us, unsigned int lba, address = (pba << (info->pageshift + info->blockshift)); result = sddr09_read22(us, address>>1, info->blocksize, info->pageshift, blockbuffer, 0); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) return result; /* check old contents and fill lba */ @@ -911,7 +905,7 @@ sddr09_write_lba(struct us_data *us, unsigned int lba, { unsigned char status = 0; int result2 = sddr09_read_status(us, &status); - if (result2 != USB_STOR_TRANSPORT_GOOD) + if (result2) US_DEBUGP("sddr09_write_inplace: cannot read status\n"); else if (status != 0xc0) US_DEBUGP("sddr09_write_inplace: status after write: 0x%x\n", @@ -952,7 +946,7 @@ sddr09_write_data(struct us_data *us, blockbuffer = kmalloc(blocklen, GFP_NOIO); if (!blockbuffer) { printk("sddr09_write_data: Out of memory\n"); - return USB_STOR_TRANSPORT_ERROR; + return -ENOMEM; } // Since we don't write the user data directly to the device, @@ -964,14 +958,14 @@ sddr09_write_data(struct us_data *us, if (buffer == NULL) { printk("sddr09_write_data: Out of memory\n"); kfree(blockbuffer); - return USB_STOR_TRANSPORT_ERROR; + return -ENOMEM; } // Figure out the initial LBA and page lba = address >> info->blockshift; page = (address & info->blockmask); - result = USB_STOR_TRANSPORT_GOOD; + result = 0; index = offset = 0; while (sectors > 0) { @@ -987,7 +981,7 @@ sddr09_write_data(struct us_data *us, result = sddr09_write_lba(us, lba, page, pages, buffer, blockbuffer); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) break; page = 0; @@ -1036,7 +1030,7 @@ sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) { command[1] = LUNBITS; result = sddr09_send_scsi_command(us, command, 12); - if (result != USB_STOR_TRANSPORT_GOOD) + if (result) return result; result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, @@ -1045,8 +1039,7 @@ sddr09_read_deviceID(struct us_data *us, unsigned char *deviceID) { for (i = 0; i < 4; i++) deviceID[i] = content[i]; - return (result == USB_STOR_XFER_GOOD ? - USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); + return (result == USB_STOR_XFER_GOOD ? 0 : -EIO); } static int @@ -1055,7 +1048,7 @@ sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) { unsigned char status; result = sddr09_read_status(us, &status); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("sddr09_get_wp: read_status fails\n"); return result; } @@ -1071,7 +1064,7 @@ sddr09_get_wp(struct us_data *us, struct sddr09_card_info *info) { if (status & 0x1) US_DEBUGP(" Error"); US_DEBUGP("\n"); - return USB_STOR_TRANSPORT_GOOD; + return 0; } #if 0 @@ -1103,7 +1096,7 @@ sddr09_get_cardinfo(struct us_data *us, unsigned char flags) { result = sddr09_read_deviceID(us, deviceID); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("Result of read_deviceID is %d\n", result); printk("sddr09: could not read card info\n"); return NULL; @@ -1214,7 +1207,7 @@ sddr09_read_map(struct us_data *us) { us, address>>1, min(alloc_blocks, numblocks - i), buffer, 0); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { result = -1; goto done; } @@ -1402,7 +1395,7 @@ usb_stor_sddr09_dpcm_init(struct us_data *us) { return result; result = sddr09_send_command(us, 0x01, USB_DIR_IN, data, 2); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("sddr09_init: send_command fails\n"); return result; } @@ -1411,7 +1404,7 @@ usb_stor_sddr09_dpcm_init(struct us_data *us) { // get 07 02 result = sddr09_send_command(us, 0x08, USB_DIR_IN, data, 2); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("sddr09_init: 2nd send_command fails\n"); return result; } @@ -1420,7 +1413,7 @@ usb_stor_sddr09_dpcm_init(struct us_data *us) { // get 07 00 result = sddr09_request_sense(us, data, 18); - if (result == USB_STOR_TRANSPORT_GOOD && data[2] != 0) { + if (result == 0 && data[2] != 0) { int j; for (j=0; j<18; j++) printk(" %02X", data[j]); @@ -1567,7 +1560,9 @@ int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) US_DEBUGP("READ_10: read page %d pagect %d\n", page, pages); - return sddr09_read_data(us, page, pages); + result = sddr09_read_data(us, page, pages); + return (result == 0 ? USB_STOR_TRANSPORT_GOOD : + USB_STOR_TRANSPORT_ERROR); } if (srb->cmnd[0] == WRITE_10) { @@ -1580,7 +1575,9 @@ int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) US_DEBUGP("WRITE_10: write page %d pagect %d\n", page, pages); - return sddr09_write_data(us, page, pages); + result = sddr09_write_data(us, page, pages); + return (result == 0 ? USB_STOR_TRANSPORT_GOOD : + USB_STOR_TRANSPORT_ERROR); } /* catch-all for all other commands, except @@ -1606,10 +1603,10 @@ int sddr09_transport(struct scsi_cmnd *srb, struct us_data *us) US_DEBUGP("SDDR09: Send control for command %s\n", ptr); result = sddr09_send_scsi_command(us, srb->cmnd, 12); - if (result != USB_STOR_TRANSPORT_GOOD) { + if (result) { US_DEBUGP("sddr09_transport: sddr09_send_scsi_command " "returns %d\n", result); - return result; + return USB_STOR_TRANSPORT_ERROR; } if (srb->request_bufflen == 0)